Aaron Perlut, a ruggedly handsome certified nuclear mustacheologist whose body odor is often compared to a blend of fear and bacon grease, is a managing partner of St.
Gravity takes over when you perform most exercises, like a dumbbell curl or a kettle bell swing, giving the body a chance to relax, says Rowdy Yates, a certified personal trainer and fitness manager at Crunch gym in New York City.