BTS member Jungkook has revealed the demanding nighttime workout routine behind his famously sharp silhouette.
Jungkook walked viewers through his late-night fitness regimen in a "Normal Log" video released as part of the 2026 BTS Festa, marking the group’s 13th anniversary since their debut. In the video, he is seen beginning his session at 11:20 p.m. "I start working out every night between 10 p.m. and 12 a.m. It’s my daily routine," Jungkook explained, kicking off his warmup with strict-form pull-ups.
After completing his pull-ups, Jungkook transitions into lat pulldowns and dips. "These days, I’m building my body again," he noted while performing chest presses to target his pectoral muscles. His comprehensive circuit continues with side lateral raises, seated rows, dumbbell shoulder presses, dumbbell curls, forearm isolation exercises, and a tenth and final movement: arm pulldowns. "I repeat this entire circuit three or four times. Everyone has workouts that best fit their own body," he added.
Online commenters reacted with widespread admiration, posting comments such as, "Workout-lover Jungkook is awesome," "Why does he look so handsome while training?" "So this is how you maintain the stamina to sing and dance live," and "Just looking at his upper-body routine, it’s no joke."
A self-described fitness fanatic, Jungkook is renowned for his strict self-discipline, consistently maintaining a body fat percentage below 10%. The video showcased his exceptionally well-balanced physique, highlighted by a firm chest and sharply defined, vascular arm muscles. To complement his daily strength training, Jungkook incorporates running to bolster both cardiovascular stamina and overall physique—a dedication that explains his celebrated "crisp shirt fit" among the group's global fandom, ARMY.
The workout revelation comes during a monumental year for the group. BTS is currently embarking on its world tour, "Arirang," and is scheduled to headline the historic halftime show of the 2026 FIFA World Cup final alongside Madonna and Shakira on July 19 (local time).
A Systematic Circuit: Designing a Solid Upper Body
Pull-ups, lat pulldowns, and seated rows serve as the foundation for comprehensive back development. These exercises primarily target the latissimus dorsi, widening the upper back to provide stable structural support for the shoulders and lower torso. Developing the lats is particularly advantageous for carving out a classic V-shaped physique, while simultaneously aiding posture correction and upper-body strength.
Meanwhile, dips and chest presses intensively target the pectoralis major. Because the triceps are heavily recruited during these movements, they pull double duty by strengthening the arms as well. Building the chest and arms in tandem is highly effective for increasing overall upper-body volume and definition.
To broaden the shoulders, Jungkook utilizes side lateral raises and dumbbell shoulder presses. These movements evenly stimulate the lateral and anterior deltoids, creating a wider frame and improving upper-body symmetry and stability. Finally, dumbbell curls isolate the biceps, while arm pulldowns target the triceps. Paired with forearm exercises that strengthen the wrists and lower arms, this comprehensive approach ensures balanced development across the entire arm while maximizing grip strength for other heavy compound lifts.
Late-Night Training: Balancing Timing, Performance, and Sleep
Jungkook's preference for working out between 10 p.m. and 12 a.m. raises a common question in sports science: When is the optimal time to exercise? Research in exercise physiology indicates that core body temperature and nervous system activation peak in the late afternoon and evening. This biological spike can enhance raw strength, improve overall exercise performance, and offer a powerful outlet for relieving accumulated daytime stress.
However, sleep experts note that the consistency of the routine and the gap between exertion and rest matter more than the clock itself. High-intensity exercise temporarily elevates body temperature and heart rate, leaving the central nervous system in a heightened state of alertness. Going to bed immediately after a heavy session can compromise sleep quality. Therefore, experts generally recommend wrapping up intense workouts at least one to three hours before turning in.
Ultimately, muscle hypertrophy and long-term health benefits depend on consistency and adequate recovery rather than the specific hour spent in the gym. Whether training at dawn or midnight, the key to sustainable physical fitness lies in choosing a schedule that aligns with one's lifestyle, maintaining regularity, and ensuring the body receives sufficient rest to rebuild.
