Strength training such as lifting weights, using resistance bands, and even using your own body weight, can help you to gain strength and build muscle. More muscle means a higher metabolism, which means more calories burned at rest, even when you are not exercising. This is often why men may lose weight faster than women when they go on similar diet plans. Not only will you be burning calories while you are strength training, but you will be burning calories while you sleep. And, aside from helping with weight loss, strength training can improve your bone density, which can help to prevent osteoporosis, or weakening of the bones, as we age. Not to mention that improving strength can also help us to be more efficient in our daily lives, i.e. lifting groceries, carrying luggage, etc.