• Start lifting weights. Research shows that building muscle is one of the best ways to boost metabolism... Because muscle tissue keeps burning calories even after we STOP exercising. In fact, one study found that when out-of-shape men started a weight-lifting routine in their 60s, most showed metabolic improvements similar to guys in their 20s! You don't have to turn into a body builder. Just lift something that's heavy for YOU - even if it's just 10 pounds. Researchers say doing that a few times a week is enough to boost muscles AND metabolism. Eat protein at every meal - not JUST at dinner. A study found that people who ate a full serving of protein at every meal - like an egg or some turkey slices - burned 25% more calories than people who just ate protein at dinner. Researchers say it's because it takes a lot of energy to break down protein - so by having it throughout the day, we keep our metabolism burning constantly. Spice up meals with hot sauce. Not only will that get you drinking more water... But the capsaicin in the peppers has been shown to temporarily boost your heart rate. And the faster our heart beats, the more calories we burn - it's that simple. In fact, one study found that people who included chili peppers in their meals saw their metabolism increase a whopping 30%!