The trainer is the worst. How can she let Kim-Nara putting her shelf in such a training, she is killing her shelf !
Training is working up and REST ! Your muscle can't develop when you are only working up. I think she is like all other trainers we see in manga and manwhua, not qualified for their job !
@Sanbaisan, he looks like a guy for me and all others people see him like it. Maybe it's a mixte swim team...