why don't they just do that at home?

there are a few women at the gym who don't use any of the equipment there. all they do is get changed in the locker room, go to the stretching area, and do random yoga poses. none of them do any of the poses in a sequence that makes sense. they do not lift weights. they do not run. they do not bike. they just stay in the stretching area.

the stretching area is just a carpeted space that is probably 8 feet by 8 feet. do they not have 8 feet by 8 feet of carpeted space in their homes? they don't even use all 64 square feet of the area. they just stay mostly on the yoga mat.

so why don't they just do that at home? why do they pay $50/month to go to a gym and not use ANY of the equipment? i don't comprehend.