I do it because it’s the least worst option available to me. If I hit the gym at lunchtime it’s usually fairly packed and I have a hard time getting the machines I like. But if I go in when the gym opens before work, then I can get in, get my sweat on, then shower+change+etc before work.

I wake up at 6, am dressed and out the door by 630, rolling into the gym parking lot at 655, and waiting by the door when they unlock it at 7.

I don’t enjoy it for intrinsic reasons. I’ve always been a night owl. But I do like the effects of it - in the last year since I started going before work, I have needed a sleep aid fewer than five times.