Inside the “Hellish” Trainee Workout: How RESCENE’s Minami Lost 18kg and What That Routine Really Does to the Body

Table of Contents

1. Key Highlights
2. Introduction
3. What Minami disclosed: the routine and its totals
4. How that routine works physiologically
5. Estimating the caloric cost: how many calories does eight sets burn?
6. Time cost and practicality: how long does this take each day?
7. Physical benefits achieved by the routine
8. The risks: why this protocol can be harmful
9. The context: trainee culture, aesthetics and performance demands
10. Safer evidence-based approaches that deliver results
11. Practical alternatives and modifications for beginners
12. Repairing and maintaining function: injury prevention and mobility
13. Real-world parallels: extreme training and athlete care
14. When rapid weight loss is medically concerning
15. Nutrition specifics for high-volume training
16. Ethical and industry considerations
17. Sample evidence-based 8-week plan to improve conditioning and body composition
18. Addressing public reaction and skepticism
19. Long-term maintenance: why gradual change wins
20. FAQ

Key Highlights

• RESCENE member Minami revealed she lost 18 kg during trainee days, citing daily emotional stress and a grueling exercise protocol that included eight sets a day of a high-volume circuit.
• The disclosed routine — 30 burpees, 20 twist planks, 20 crunches, 20 push-ups with shoulder taps, 30 jumping jacks, 20 lunges, 20 jumping squats per set, repeated eight times — demands high cardiovascular output and full‑body muscular endurance; estimated daily energy cost varies widely by weight and pace.
• That level of training carries clear physiological benefits but also measurable risks: extreme caloric deficits, overuse injury, hormonal disruption and mental-health strain. Safer, evidence-based alternatives can deliver strong results with less harm.

Introduction

When RESCENE member Minami announced she had lost 18 kg during her trainee period, the reveal reignited discussions about how pop idols are shaped behind the scenes. In a video on Woni’s YouTube channel titled “War Against Weight,” Minami explained that weight loss became a daily pressure that left her in tears. The group’s training regimen, which also produced 13 kg loss for Liv and 8 kg for Zena, has since circulated widely: a single set of high-intensity movements repeated eight times daily. Fans and fitness observers reacted with admiration, concern and curiosity about how such a program transforms the body — and at what cost.

This article breaks down the routine, quantifies its physical demands, explains the physiological mechanisms that drive weight loss, and outlines safer, science-backed pathways for people who want to improve body composition without jeopardizing health. It also situates the story within the broader context of trainee culture, mental health, and industry responsibility.

What Minami disclosed: the routine and its totals

Minami and fellow RESCENE members disclosed the exact sequence they repeated as trainees. One set consisted of:

• 30 jumping burpees
• 20 twist planks
• 20 crunches
• 20 push-ups with shoulder taps
• 30 jumping jacks
• 20 lunges
• 20 jumping squats

They said they completed eight sets daily. Multiplying those figures yields daily totals of:

• Burpees: 240
• Twist planks: 160
• Crunches: 160
• Push-ups w/ shoulder taps: 160
• Jumping jacks: 240
• Lunges: 160
• Jumping squats: 160

That is a very large volume of high‑intensity, bodyweight movements performed with minimal recovery. For context, most standard high-intensity interval training (HIIT) sessions prescribe 20–40 minutes of intense work, not upwards of an hour of continuous circuit work across multiple rounds. The trainees’ protocol amounts to both a strength‑endurance and aerobic assault on the body, repeated every day until the desired weight was reached.

How that routine works physiologically

The routine combines plyometrics, core work, calisthenics and aerobic movements. Each element contributes differently:

• Burpees: Full‑body plyometric movement that elevates heart rate rapidly and recruits musculature across the posterior chain, chest and shoulders. Highly glycolytic when performed rapidly; excellent for calorie burn and improving cardiovascular fitness.
• Jumping jacks: Low‑skill aerobic movement that reinforces whole‑body blood flow and adds steady-state cardio volume.
• Push-ups with shoulder taps: Upper‑body pressing with an anti‑rotational core demand; develops pressing endurance and shoulder stability while increasing metabolic load.
• Lunges and jumping squats: Single‑leg and bilateral lower‑body work respectively; build muscular endurance in quadriceps, glutes and hamstrings and challenge balance and power.
• Twist planks and crunches: Core‑specific exercises that reinforce trunk stability and rotational control. In this context they maintain spinal integrity and contribute to aesthetic waistline changes when combined with fat loss.

The dominant mechanisms for weight loss from this protocol are sustained energy expenditure and forced caloric deficit. High volumes of burpees and jumping squats produce significant anaerobic and aerobic demand, driving glycogen depletion and elevated post-exercise oxygen consumption (EPOC). Over days and weeks, a consistent daily energy gap — more expenditure than intake — leads to fat loss.

But energy deficit is not the only factor. Muscle catabolism risk increases when caloric intake is insufficient for recovery. Heavy daily circuits without adequate protein and rest can produce muscle loss, which reduces resting metabolic rate and makes long-term weight maintenance harder.

Estimating the caloric cost: how many calories does eight sets burn?

Calorie burn depends on body mass, intensity, pace and rest between movements. Using reasonable assumptions provides a useful estimate for comparison.

Assumptions for a typical calculation:

• Body weight: 70 kg (154 lb) — use as a baseline example
• Pace: continuous movement, limited rest between exercises and sets
• Total active time per set: 6–12 minutes depending on pacing and exercise tempo
• Total session time (8 sets): 48–96 minutes of active work

MET (metabolic equivalent) values for vigorous bodyweight circuits often range from 8 to 12 METs. For a 70 kg person, calories per minute = MET × 3.5 × weight (kg) ÷ 200.

• At 8 METs: ≈ 9.8 kcal/min
• At 12 METs: ≈ 14.7 kcal/min

Multiply by active minutes:

• Low estimate (48 minutes at 8 METs): ~470 kcal
• High estimate (96 minutes at 12 METs): ~1410 kcal

Realistic session consumption likely falls between ~600 and 1,000 kcal for a 70 kg individual performing eight fast-paced sets with minimal rest. Heavier individuals burn more; lighter individuals burn less. Intensity fluctuations and short pauses between sets alter totals as well.

Those figures explain why such a program can precipitate rapid weight loss, particularly when combined with dietary restriction. Repeated daily sessions compound the weekly energy deficit quickly.

Time cost and practicality: how long does this take each day?

Estimating duration requires a view of movement rate and permitted rest. Example timings:

• 30 burpees: 90–180 seconds depending on pace (3–6 seconds per rep)
• 20 twist planks / 20 crunches / 20 push‑ups / 20 lunges / 20 jumping squats / 30 jumping jacks: around 1–3 minutes each depending on tempo

One set can take roughly 6–12 minutes. Eight sets therefore require between 48 and 96 minutes of active work. Add warm-up, mobility, and cool-down: 60–120+ minutes per day. That is a significant daily time commitment and stands in contrast with common fitness prescriptions that favor 3–5 sessions per week for most people.

Physical benefits achieved by the routine

When performed correctly and with adequate recovery, high-volume circuit work produces measurable gains:

• Cardiovascular conditioning: Frequent high-intensity efforts improve VO2 max and cardiac output over weeks.
• Muscular endurance: High repetitions across multiple movements develop fatigue resistance in both upper and lower body.
• Calorie expenditure: Sustained metabolic demand supports weight loss when combined with diet.
• Body composition: Fat loss coupled with retained or mildly improved lean muscularity can change visible shape significantly.

For performers judged primarily by appearance and dance endurance, those benefits translate directly to job readiness: stamina on stage, the ability to sustain choreography, and a leaner silhouette.

The risks: why this protocol can be harmful

High frequency plus high intensity without systematic recovery creates predictable adverse effects.

Overuse injuries

• Tendinopathies in shoulders and knees, plantar fasciitis and lumbar strain become real risks when plyometrics and repetitive loading occur daily without deloading phases.
• Repeating high-impact movements such as burpees and jumping squats multiplies compressive and shear forces with limited time for tissue remodeling.

Hormonal and metabolic disruption

• Prolonged intense training with caloric restriction can suppress the hypothalamic-pituitary-gonadal axis, causing menstrual irregularities or amenorrhea in women.
• Chronic cortisol elevation from stress and under-recovery accelerates muscle catabolism and fat retention, particularly visceral fat.

Immune suppression and illness

• Persistent high training load raises susceptibility to infections if sleep, nutrition and stress management are inadequate.

Mental-health cost

• Minami’s admission that she cried daily echoes numerous accounts from entertainment trainees. The psychological burden of relentless weight-targets can precipitate disordered eating, anxiety and depression.
• Industry-driven pressure compounds personal and social stressors, risking long-term mental-health consequences.

Diminished long-term results

• Rapid weight loss through unsustainable methods often leads to rebound weight gain. Loss of lean mass reduces basal metabolic rate, making weight regain easier and maintenance harder.

The context: trainee culture, aesthetics and performance demands

K-pop trainee systems emphasize visuals and performance readiness. Trainees often undergo intensive daily hours of dance rehearsal, vocal coaching and fitness conditioning. Agencies frequently set strict weight or appearance standards tied to marketability.

That model produces highly polished performers, but it also creates incentives for extreme short-term strategies. Minami’s statement that “all the stress of daily life manifested as pressure to lose weight” reflects a system where physical transformation is a contractual and career necessity. Public reaction to such revelations typically splits between admiration for dedication and alarm over the methods used.

Industry reform conversations have focused on regulated training hours, mandatory medical oversight, nutrition education and mental-health support for trainees. Several entertainment companies now employ in-house nutritionists and therapists, but enforcement and consistency vary.

Safer evidence-based approaches that deliver results

If the goal is sustainable fat loss and improved performance — without excessive harm — a structured program blends progressive overload, periodization, nutrition, and recovery.

1. Progressive overload with mixed modalities

• Include strength training 2–4 times per week using compound lifts (squats, deadlifts, presses, rows) or progressive calisthenics. Strength work preserves and builds lean mass.
• Add 2–3 HIIT sessions of 10–25 minutes or 2–3 steady-state cardio sessions of 30–45 minutes weekly. This distributes load more manageably than daily maximal circuits.

2. Manage total weekly volume

• Total weekly high-intensity work should be tailored to experience and recovery. Many athletes succeed with 150–300 minutes of moderate-to-vigorous activity per week, spread over sessions and interleaved with rest.

3. Nutrition aligned with goals

• Moderate caloric deficits (-300 to -700 kcal/day) support steady weight loss at 0.25–1 kg per week while protecting lean mass. Prioritize adequate protein (1.6–2.2 g/kg body weight) and sufficient micronutrients.
• Eat frequent, balanced meals, and time carbohydrate intake around training to support performance and recovery.

4. Recovery and sleep

• Target 7–9 hours of sleep nightly. Schedule at least one full rest day per week and periodic deload weeks every 4–6 weeks to allow adaptation.

5. Professional oversight

• Work with a certified strength coach or physiotherapist for programming, and consult a registered dietitian for individualized nutrition plans. Regular health screenings identify complications early.

Practical alternatives and modifications for beginners

The disclosed routine is extreme for most people. For safe progression, scale volume and intensity.

Beginner progression (sample):

• Phase 1 (Weeks 1–4): 3 sets of the circuit, 2–3 times per week. Focus on strict form and controlled tempo. Rest 48 hours between sessions.
• Phase 2 (Weeks 5–8): 4–5 sets, 3 times per week or 3 sets × 4 times per week. Add one strength session emphasizing compound lifts or advanced calisthenics.
• Phase 3 (Weeks 9–16): 6–8 sets across 4–5 total weekly sessions, including targeted strength and mobility work, not just repeated high-volume circuits.

Technique cues and regressions:

• Burpees: perform a step-back plank instead of a jump-back; eliminate the push-up if necessary; remove the final jump to lower impact.
• Jumping jacks: replace with marching jacks or low-impact lateral steps for joint issues.
• Push-ups with shoulder taps: perform from knees or elevated surface; pause after each tap to preserve shoulder integrity.
• Jumping squats: switch to regular squats or split squats if knee pain appears.

These regressions preserve metabolic stimulus while reducing risk exposure.

Repairing and maintaining function: injury prevention and mobility

When volume spikes, prioritize tissue readiness.

• Warm up for 8–12 minutes with dynamic mobility, movement-specific drills and progressive activation (bodyweight squats, shoulder circles, hip hinges).
• Incorporate mobility sessions 2–3 times weekly focusing on ankle dorsiflexion, hip flexor flexibility and thoracic rotation to support jumping and twisting demands.
• Add a dedicated posterior-chain strengthening day (Romanian deadlifts, glute bridges, hyperextensions) to balance high anterior-load volumes from lunges and squats.
• Neuro-muscular control: single-leg balances and slow eccentric exercises reduce risk of falls and improve landing mechanics.

Early intervention for pain — scaling load and consulting a physiotherapist — keeps training sustainable.

Real-world parallels: extreme training and athlete care

High-volume daily conditioning is not unique to entertainment trainees. Military recruits, special operations candidates and some competitive athletes endure intense cycles in short windows. The difference lies in support systems: military and sports programs typically integrate structured medical oversight, periodized recovery and nutrition logistics. Entertainment training sometimes lacks those safety nets.

Athletes who sustain extreme workloads do so within periodized frameworks: peak-versus-offseason cycles, targeted microcycles and planned deloads. Unsanctioned daily extremes without periodization are more likely to produce harm than performance gains.

When rapid weight loss is medically concerning

Certain red flags demand immediate attention:

• Rapid, uncontrolled weight loss combined with dizziness, syncope, or fainting spells.
• Irregular or absent menstrual cycles in females after extended periods of caloric restriction.
• Persistent injuries that do not respond to rest and conservative treatment.
• Persistent fatigue, poor sleep, mood disturbances or problems with concentration.
• Recurrent infections or slow wound healing.

These are signs of physiological stress, possible endocrine disruption and impaired recovery. Medical evaluation is required.

Nutrition specifics for high-volume training

With large daily workloads, fueling becomes critical.

• Protein: Aim for 1.6–2.2 g/kg/day to preserve muscle during a calorie deficit. For a 60–70 kg trainee, that equates to roughly 96–154 grams per day.
• Carbohydrates: Timed carbohydrates around workouts (pre- and post-training) replenish glycogen stores and support performance. High-intensity sessions benefit from 3–6 g/kg/day of carbohydrates based on total training load.
• Fats: Keep dietary fats to 20–35% of total calories to support hormonal function and fat‑soluble vitamin absorption.
• Hydration and electrolytes: Replace sweat losses, particularly when training includes repeated high-intensity sets and is performed in hot environments.
• Micronutrients: Iron status, vitamin D and B vitamins influence energy and recovery; monitor and supplement through diet or under clinician guidance if deficiencies arise.

A clinically supervised approach prevents severe deficits that exacerbate catabolism and fatigue.

Ethical and industry considerations

Minami’s disclosure highlights an ethical dilemma: how to balance a trainee’s career prospects with the obligation to protect health. Agencies have an ethical and legal responsibility to provide medical support, nutrition counseling and mental-health services. Public transparency about mandated weight expectations or training hours should be increased to protect vulnerable trainees. Investors and consumers who value artist welfare can pressure companies to adopt enforceable standards that protect physical and mental health.

Regulatory guidelines for trainee care would mirror athlete support: baseline medical checks, ongoing monitoring, limits on training hours, mandatory rest days and mental-health counseling. Those standards also reduce long-term career attrition due to injury or burnout.

Sample evidence-based 8-week plan to improve conditioning and body composition

This sample plan blends strength, conditioning and recovery for someone seeking significant change without extreme daily overload. Adjustments are required depending on baseline fitness.

Weeks 1–4

• Strength: 3× weekly full-body sessions (squats, press, rows, hinge; 3 sets × 6–10 reps)
• Conditioning: 2× weekly HIIT (12–20 minutes) + 1× moderate steady-state (30–45 minutes)
• Mobility: 2× weekly, 20 minutes
• Nutrition: 300–500 kcal deficit, 1.6–2.0 g/kg protein

Weeks 5–8

• Strength: 3× weekly; increase intensity or volume (add accessory unilateral work)
• Conditioning: 2× HIIT sessions (10–25 min), 1× interval tempo run/cycle (30–40 min)
• One weekly session emulates a “long circuit” day: 4–6 sets of mixed movements, tolerable intensity
• Regular sleep discipline and one full rest day each week

This approach yields steady performance and compositional changes while protecting health and avoiding extreme psychological strain.

Addressing public reaction and skepticism

Public response to trainee weight-loss stories is mixed. Admirers praise discipline and transformation. Skeptics worry about medical intervention, medication, or unhealthy methods. Transparency about methods, access to clinical oversight, and responsible storytelling by media and agencies can reduce rumor and stigma. When artists speak candidly about their experience — Minami did — the conversation can push stakeholders toward reform.

Long-term maintenance: why gradual change wins

Rapid, extreme methods often produce temporary results. Long-term maintenance depends on sustainable habits:

• Strength training to preserve metabolically active tissue
• Flexible dietary approaches that avoid extreme food restrictions
• Regular, enjoyable movement rather than punishment-based exercise
• Social support systems and mental-health care to manage stressors

Artists who remain healthy, resilient and mentally well are more likely to sustain long careers. That goal aligns with both human welfare and industry interests.

FAQ

Q: Is the RESCENE trainee routine safe for the average person to copy? A: No. The routine’s volume and intensity are beyond what most recreational exercisers should perform daily. Without progressive buildup, medical screening, tailored nutrition and professional coaching, risks include injury, hormonal disruption and burnout. Safer alternatives include periodized HIIT and strength training with rest days.

Q: How long would it typically take to lose 18 kg safely? A: A medically recommended pace is roughly 0.25–1.0 kg per week, depending on starting weight and individual factors. Losing 18 kg at that rate typically requires 18–72 weeks. Faster loss often involves greater health risks and diminished lean mass.

Q: How many calories might the eight-set routine burn in a session? A: Estimates vary by body weight and pace. For a 70 kg person, plausible ranges are roughly 600–1,000 kcal for an eight-set session performed with high intensity and limited rest. Heavier individuals burn more, lighter individuals burn less. Those numbers presuppose sustained effort across 48–96 minutes of active work.

Q: Can you get similar results with less exercise? A: Yes. Combining 3–4 weekly strength sessions, 2–3 cardio/HIIT workouts, and a modest calorie deficit can produce significant fat loss while protecting lean mass. Nutritional strategy and recovery are as important as exercise volume.

Q: What signs suggest an individual is overtraining or experiencing harm? A: Warning signs include persistent fatigue, declining performance, frequent injuries, sleep disruption, mood changes, loss of menstrual cycles in women, recurrent infections, and prolonged soreness that does not respond to rest. Medical evaluation is essential if these appear.

Q: Should trainees have mandatory medical oversight? A: Yes. Regular medical checks, access to dietitians and mental-health professionals, and specified rest and recovery policies should be standard to protect physical and psychological well-being.

Q: How should someone modify the routine if they want to try it safely? A: Reduce sets to 3 per day initially, increase rest days, replace high-impact elements with lower-impact variations, add strength training for lean-mass preservation, and ensure a protein-rich diet and adequate sleep. Work with a coach or clinician to tailor the plan.

Q: Does rapid weight loss damage long-term metabolism? A: Rapid loss that includes substantial lean mass can reduce resting metabolic rate and promote regain. Preserving muscle through resistance training and adequate protein reduces that risk and supports longer-term metabolism.

Q: Are there industry changes that could prevent trainee harm? A: Implementing enforced limits on training hours, mandatory nutrition and psychological support, medical monitoring, and transparency about weight expectations would protect trainees. Agencies and regulators share responsibility for enforcement.

Q: What should fans and industry watchers take away from Minami’s disclosure? A: Minami’s experience underscores the harms of extreme weight‑focused pressure. Fans can advocate for artist welfare by supporting companies that prioritize health. Industry stakeholders must balance the drive for performance and aesthetics against the ethical duty to protect young performers.

Minami’s account is a reminder that transformation often involves trade-offs. The fitness physiology behind her trainee routine explains rapid changes in appearance and stamina. The human cost — physical, hormonal and psychological — shapes the debate about how performers should be trained and protected. Safer, sustainable results arise from structured programming, medical oversight, and a culture that values long-term welfare over short-term aesthetics.