BTS's eldest member Kim Seokjin will be the first member to enlist mandatory military service as per the official announcement by Big Hit Music. Jin is known to be one of the fittest members of the group, with a flexible body.

Of late Jin has been sharing pictures and videos of tennis practise, that forms an important part of his fitness routine. Often spotted accompanying him is group member J-Hope who has often confessed he would be a tennis player, if not a K-pop star.