1. It’s a HIIT! Or “high intensity interval training.” It’s a full-body workout where you do all sorts of things, like throwing 10-pound medicine balls around (which I did yesterday), old-school burpies, squats and other interval exercises, and there’s always something different thrown in to keep your muscles guessing. Anyway, I just started taking classes at a studio down the block, and oh, my lanta! — to live in a constant state of soreness… but it’s a good sore, ya know? HIRDETÉS One of my neighbors is an instructor and a personal trainer, and the studio is in her garage,...