Try this HIIT workout: After a 10-minute warm-up, spend 30 seconds doing as many reps as possible of squats, push-ups, kettlebell swings, or single-arm rows. Then, rest for 30 seconds and do a different exercise for another 30 seconds. Continue for 10 rounds. Choose any of your favorite exercises—just make sure you alternate between exercises that work different muscle groups, which will help certain muscles recover while you work others.
There are a variety of definitions of what moderate-intensity exercise is, but it typically falls between about 70 to 80 percent of your maximum heart rate, which would be a level 4 to 6 on a 10-point perceived exertion scale. That means you are breathing harder than normal but can carry on a conversation without much difficulty and you feel pretty comfortable with what you're doing. The American College of Sports Medicine (ACSM) often recommends this level of intensity in its exercise guidelines. The lower end of this range usually incorporates the fat burning zone.
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.