From 'What the fat!' to Chicken Feast: Lee Jun-young's Shocking Diet Rebellion in '24-Hour Health Club' Episode 4

The Unexpected Chicken Mukbang: Health Fanatic's Shocking Diet Rebellion
Tonight's episode 4 of KBS2's Thursday-Friday drama '24-Hour Health Club' delivered a major surprise as Do Hyun-jung (Lee Jun-young), the fitness-obsessed gym owner who typically shouts 'What the fat!' at the mere sight of unhealthy food, was caught indulging in a chicken feast. This unexpected scene marks a significant character development for Hyun-jung, who has been known for his strict adherence to clean eating and exercise regimens.
The episode, which aired on May 8th at 9:50 PM KST, showed Hyun-jung abandoning his principles and enthusiastically devouring fried chicken, creating a stark contrast to his usual behavior. This surprising moment occurred during a meeting with Lee Mi-ran (Jung Eun-ji), who appeared troubled despite being in front of what the show described as everyone's 'soul food.' The juxtaposition of their reactions – Hyun-jung's unexpected enjoyment versus Mi-ran's contemplative mood – added an interesting dynamic to their relationship development.
Viewers were left wondering what could have possibly led the health-obsessed gym owner to trade his beloved chicken breast for deep-fried chicken. This character break suggests significant emotional developments that might be reshaping Hyun-jung's rigid worldview.
Gym Management Crisis and Character Developments
The episode continued the storyline from episode 3, where Hyun-jung had been desperately fighting to save his struggling gym from financial ruin. In previous episodes, he had gone so far as to stake his position as manager in a bet to attract new members. His gamble paid off when he successfully recruited and trained Kang Cheol-nam (Jo Jung-chi), helping the gym gain recognition as a 'workout hotspot.'
Mi-ran, who had previously requested a refund for her 'total life care' program after being humiliated in front of her ex-boyfriend Yeom Jun-seok (Jung Wook-jin), made her return to the 24-Hour Health Club. This development came after she experienced a moment of realization when she remained standing on a suddenly stopping bus thanks to her improved core strength – a tangible benefit from her training that made her reconsider her decision to quit.
The relationship between Hyun-jung and Mi-ran continues to evolve in interesting ways. In episode 3, Hyun-jung had convinced Mi-ran to return to his gym with the sweet and direct line, 'Don't go. Come to me,' showing his growing personal interest in her beyond just being a client. Their chicken restaurant meeting in episode 4 seems designed to reveal new facets of both characters, potentially deepening their connection.

Escalating Tensions with Rosa
One of the most dramatic developments in episode 4 involved the escalating conflict between Hyun-jung and trainer Rosa (Lee Mi-do). The tension that had been building between them reached a breaking point, creating significant disruption at the health club.
The situation took an unexpected turn when Rosa suffered an injury allegedly caused by Hyun-jung, shocking everyone present including trainer Alex (Lee Seung-woo) and the regular gym members. The 'three witches' – Im Seong-im (Park Sung-yeon), Yoon Bu-young (Lee Ji-hye), and Park Dul-hee (Hong Yun-hwa) – were also witnesses to this confrontation, their surprised reactions adding to the dramatic atmosphere.
This incident followed Hyun-jung's shocking declaration to Rosa: 'You need to leave,' essentially attempting to remove her from the gym. The conflict between these two strong personalities has been building since earlier episodes, particularly after Rosa challenged Hyun-jung by proposing a deal where he would step down as manager if he failed to attract new members. With Hyun-jung having succeeded in that challenge, the power dynamics have shifted, leading to this explosive confrontation.
The episode leaves viewers wondering about Rosa's fate at the health club and how this incident will affect the gym's operations and reputation going forward.
The Competitive Fitness Landscape
Adding to the gym's challenges is the presence of Hyun-jung's rival, Roy (Kim Kwon), who has opened a large fitness center directly across from the 24-Hour Health Club. This competitive threat has increased the pressure on Hyun-jung and his team, as they worry about losing existing members to the new facility.
The contrast between the intimate, character-driven approach of Hyun-jung's gym and what appears to be a more commercial, high-end facility run by Roy creates an interesting backdrop for the personal and professional struggles of the main characters. This competitive element adds stakes to the character developments and relationships forming within the health club.
The show continues to balance the professional aspects of running a gym with the personal growth of its characters, using fitness as both a literal and metaphorical vehicle for transformation. Cheol-nam's journey from a skinny, self-conscious individual to someone gaining confidence through training serves as an inspiring subplot that reinforces the show's themes about physical and emotional health being interconnected.

Heartwarming Moments and Character Growth
Despite the drama and tension, episode 4 also delivered heartwarming moments that showcase the positive impact of exercise and community. The relationship between Hyun-jung and Cheol-nam has developed into a meaningful mentorship, with Hyun-jung's 'hellish training' actually helping Cheol-nam gain both physical strength and confidence.
Mi-ran's role has expanded beyond just being a potential romantic interest, as she helped Cheol-nam overcome his loss of appetite by introducing him to her 'Great Food Map' featuring various delicious options like pork trotters and grilled shellfish. This 'eating class' not only provided visual delight for viewers but also showed Mi-ran's empathetic nature as she comforted Cheol-nam when he expressed feeling weak and disrespected by others.
Her encouraging words, 'I noticed my body changing without even realizing it through exercise,' offered both Cheol-nam and viewers a touching reminder of how physical training can transform not just bodies but also mindsets and lives. This theme of holistic transformation through fitness continues to be one of the show's strongest elements, resonating with audiences who may be on their own fitness journeys.
Viewer Reactions and Future Expectations
The episode has generated significant buzz online, with viewers particularly intrigued by the chicken mukbang scene that shows a new side to Hyun-jung's character. Many fans have expressed excitement about the developing relationship between Hyun-jung and Mi-ran, appreciating their chemistry and the slow-building connection that feels authentic rather than forced.
The conflict with Rosa has divided viewer opinions, with some supporting Hyun-jung's assertive management style while others sympathize with Rosa's position. This complexity in character dynamics has kept audiences engaged and discussing possible outcomes for the gym and its staff.
As the series approaches its midpoint, expectations are high for how the various storylines will develop. Will Hyun-jung continue to soften his rigid approach to fitness and life? How will his relationship with Mi-ran evolve beyond their trainer-client dynamic? And what will happen to Rosa after the injury incident?
With its blend of humor, heart, and health-focused storytelling, '24-Hour Health Club' continues to carve out a unique position in the current drama landscape, offering entertainment while also inspiring viewers to consider their own relationships with fitness, food, and personal growth.
Discover More

Park Bo Gum's 'Good Boy' Creates Massive Buzz: Olympic Medalists Turn Crime Fighters in JTBC's Most Anticipated Drama of 2025
Park Bo Gum returns to the small screen in the highly anticipated action-comedy 'Good Boy', premiering May 31, 2025. The drama features former Olympic athletes joining the police force to fight crime using their athletic skills.

AOA's Dohwa Stuns Fans with Surprise June Wedding Announcement: "I've Met Someone I Want to Walk Through Life With"
Former AOA member Dohwa (previously known as Chanmi) shocked fans with her surprise wedding announcement on May 8, 2025, revealing plans to marry her supportive fiancé this June.

OH MY GIRL's Contract Renewal Shakes K-pop: 4 Members Stay, YooA & Arin Embark on New Paths While Promising to Continue as a Group
OH MY GIRL's contract renewal news reveals Hyojung, Mimi, Seunghee, and Yubin staying with WM Entertainment while YooA and Arin depart but remain as group members, marking a significant milestone in their 10-year journey.

24-Hour Health Club Episode 3: Lee Jun-young's Struggle to Save His Gym Amidst Plummeting Ratings
Episode 3 of KBS2's romantic comedy '24-Hour Health Club' follows gym owner Do Hyun-jung's desperate attempts to save his gym while dealing with falling ratings and a rival fitness center.

Kim Soo-hyun's Team Claims Kim Sae-ron's Voice Recording is AI-Generated Fake, Sparking Major Controversy
A heated legal battle has erupted between actor Kim Soo-hyun and the family of late actress Kim Sae-ron over alleged AI-manipulated voice recordings that claim to reveal an underage relationship.

EPEX's 'So Nice' Collaboration with joan: A Spring Romance That Has Fans Swooning
EPEX teams up with American synth-pop duo joan for their first English single 'So Nice', delivering a cheerful spring song that captures the fluttering emotions of romance.