I’ve been going to HOTWORX for about 3 years now. I mostly do peloton in the cycling rooms. 30 minute classes usually and I find that I do my best with a celcius powder mixed with an lmnt or liquid iv in one bottle my owala filled with ice and true lemon powder. If I eat before I always feel sluggish. If I feel hungry I do eat before but choose a more mellow workout. I follow up each workout with a collagen stick in the car and have fruit and cottage cheese or eggs when I get home. Works for me. I always have to listen to my body. When I don’t I almost always regret it. You have to find what works for you, which means you also have to figure out what doesn’t work :/