Eat Iron

Eat iron
Yeah, we just told you to pump iron, but you also need to eat it. "If you don't have enough of this mineral, your body can't get enough oxygen to your cells, which slows down your metabolism," explains Samantha Heller, R.D., a nutritionist at the New York University Medical Center. Most multivitamins contain around 18 mg (the RDA for adults); you can also get your fill by eating three to four daily servings of foods rich in iron, such as lean red meat, chicken, fortified cereal and soy nuts. If you are feeling symptoms such as fatigue and weakness, ask your doctor to test you for anemia (it's a simple blood test) at your next physical.