I would say if you can’t train in 68 degree temperature and don’t sweat like it’s Noah’s flood then you not working hard enough and it’s not for you, the place I train at now is not air conditioned just a bunch of fans blowing hot air around training in at least 100 degree temperature if your not willing to train in that kind of heat then ya just wasting your time! Take care of a 24/7 special needs son so have to get up at 4:45am to make it to class at 9:00am. But I love training, the only hard part about it is getting started!!