because some marketing group told them they needed it so they can look good while working out. and they bought it. why, because even when they get mad because we stare, sex sells and they want to look sexy.
LOL. Do you stare?
Stare, no. but i notice they are there.
What's wrong with wanting to look hot.
It's bandwagon. When young females see celebrities using these products, most would buy those clothes to be like them. It's simple advertisement tricks.
Apparently they don't do the kind of sweating that I do. My basic "ready to sweat/ready to work" outfit is an old pair of shorts or pants and one of my dad's old shirts.
not me! I <3 goodwill!