Arctic Gym

Lately, the controlling factor to how much time I can spend working out isn't strength or endurance, but heat and the attendant dehydration.

Now, my gym, like other gyms I've been to, is kept at more or less normal room temperature. And I think that's part of the problem.

So instead, how about a gym where they keep the temperature way down- maybe 50 degrees Fahrenheit or so, with very low humidity. You would need to exercise to stay warm, and once you were exercising you'd have a much easier time venting waste heat from the exercise.

I also seem to recall that cold encourages burning calories, and while the effect would probably be tiny every little bit helps. More importantly, people would sweat less, so the gym would smell better.