Pick Up the Weights
Another way to speed up your metabolism is to begin strength training. "You should increase your muscle mass, because as your muscles get bigger, your resting metabolic rate increases," Dr. Lofton said.
In this instance, lifting weights is better than cycling and yoga because muscle is more metabolically active, both doctors explained. More muscle requires more energy, and as a result, it increases your metabolic rate, Dr. Arad explained.
Here's a four-week beginner weightlifting program to get you started.