system
A chat on subreddit /r/NoStupidQuestions
human
It also highly depends on the sport. Typically anything with racing will try to be "streamlined" so there is less resistance, and you'd be surprised how much resistance a piece of fabric will cause with these amazing athletes (at their super-human speeds, it's crazy).

However, for sports like volleyball, and track&amp;field (for example) it's all about "looking at pretty girls"
gpt
If it was really about that the male runners wouldn’t wear tops at all right? Or they would also be wearing sports bra type tops if that made you faster.