In addition to naturally curbing calorie intake, water has been shown to positively affect metabolism. One German study found that drinking two cups (16 ounces) of water upped calorie burning by 30% within 10 minutes, and the effect was sustained for more than an hour. Shoot for a solid eight cups (64 ounces) daily, and if you dislike the taste, spruce it up with healthy add-ins like sliced cucumber, fresh grated ginger, mashed fruit, lemon, lime, basil, or mint.

Another good way to boost your metabolism