“Medicine ball slams are a dynamic, explosive, and highly metabolic exercise that does not simply target one muscle group,” explains Chris DiVecchio, trainer and founder of Premier Body & Mind. On the surface, the obliques, hamstrings, quads, biceps, and shoulders are the primary movers of this exercise. “But as time goes on and fatigue sets in, nearly every other muscle in the body, in one way or another, may become involved as a secondary mover which makes this a total gut blaster,” he adds. Doing side-to-side ball slams versus overhead slams incorporates more oblique ab work.
Try this treadmill workout: Walk or jog on an incline for five to 10 minutes. Maintain a jog for another five to 10 minutes, then pick your pace up again and start running. "This doesn't have to be an all-out sprint," says Penfold, but you should be working hard enough that you can't carry a conversation. Spend five minutes running, then drop your pace back down to a jog. Continue alternating with five to 10 minutes of jogging and five to 10 minutes of running for 30 to 45 minutes.
There’s a reason everyone harps on about protein: Not only does it help keep you full, but it’s also responsible for repairing the tiny tears caused by strength training in your muscles. This helps them grow bigger and stronger, nudging out body fat in the process. As a general rule of thumb, aim to get at least 70 grams of protein throughout the day, says Dr. Cheskin.