Eat small meals more often. In simple terms, eating spurs your metabolism — the process by which your body turns food into energy. Eating more often, then, may kick your metabolism into a higher gear more times per day (e.g., if you eat six times a day, you get six “spikes”). But, you must make sure that eating more often does not also mean eating more; it's essential that you reduce your overall average daily calories.
Work your core. When many people think of core strengthening, they think of stomach crunches. Crunches are helpful for building abdominal muscles, but contrary to popular belief, crunches won't do much to lose the layer of fat stored in your belly, and can actually cause significant damage to the spine. Instead, try a workout routine that strengthens your whole core, like yoga, or try abdominal presses and planking.
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’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.