BTS always makes sure that they are in great shape all the time. RM recently took to Weverse to share that he had a health check-up and revealed that he weighs three kilos heavier compared to last year. He then noted that he was told it was because his muscle mass increased.

This information didn’t shock ARMYs as RM has been looking extra buff lately. Fans pointed out numerous times that the BTS leader has gained a lot of muscles, especially his arms. J-Hope even previously shared that he was shocked to see RM’s arms and said that they were as big as his thighs.

Despite RM’s impressive physique, he admitted that he’s “jealous” of Jungkook’s body fat percentage. The BTS leader said that his current body fat percentage is 15%. He then revealed that Jungkook’s body fat percentage is 10%, which is his goal.

This revelation of RM didn’t shock ARMYs as well. Jungkook had been reminding the fandom that he is not their baby bunny anymore by transforming his body from boy to man. Despite being the youngest of the group, the “My Time” singer is one of the most, if not the most, muscular boys out of the bunch.

Health is extremely important for entertainers, especially BTS, who is in demand all over the world. But being healthy is not the only thing that the members need to worry about as visuals are essential in the K-pop world to stand out from the rest.

BTS, like most K-pop idols, change their hairstyles to set for their comeback. Some of these changes are subtle, while others are quite extreme.

Park Nae Joo is a popular hairstylist in the K-pop industry. He shared that to achieve RM's blonde hair for their second album, he had to bleach his hair eight times.

At the time, Park Nae Joo was also just starting with his career like BTS, so he didn’t have a shop yet. He would go to the boys’ training room, and there he worked with their hair. The members then had to go out in the public washroom, which didn't have hot water, to wash their locks.

RM had to wash his hair eight to nine times in the public washroom to rinse the bleach out during the coldest day of the year. Park Nae Joo laughed as he recalled the BTS leader screaming as he ran back to the warm training room because he was freezing outside.