Beauty Serenity

Opt for full-fat dairy

Dieters taking capsaicin, the chemical that gives hot peppers their fire, doubled their energy expenditure for several hours, according to research from UCLA.

The more you have to chew a bite before swallowing, the more energy you're burning before that food even hits your belly.

Drink coffee or tea

Eating breakfast jump-starts your metabolism and keeps your energy high all day.

A vigorous aerobic workout can help you burn almost 200 extra calories during the 14 hours following your sweat session, according to a small 2011 study. The research suggests short bouts of intense running, swimming, or riding (HIIT workouts) beat longer, more leisurely workouts when it comes to charging your metabolism. "Just 20 to 30 minutes of HIIT, two or three times a week, is enough to see results," said Pamela Peeke, MD, author of The Hunger Fix, in a previous interview.

Pumping iron increases your calorie burn long after you stop working out. But that doesn't mean those 3-pound dumbbells are going to cut it.

Avoid snacking at night.