Fitness Capsules

A room cranked past 100 degrees pushes your body in ways a normal class doesn't, and the safety advice isn't settled. These views differ on strict hydration schedules versus drinking to thirst, the role of electrolytes, how to catch heat-stress symptoms, and how much to trust the research behind it all. Weigh them to set your own hydration and heat plan.

The cardio-versus-intervals argument drags on partly because fat loss studies are riddled with dropouts and missing measurements. This take argues that when those gaps are filled with rigorous statistical methods instead of ignored, high intensity interval training pulls clearly ahead of steady state cardio. If you care what the evidence really says, the way researchers handle incomplete data should change which workout you trust.