Calories aren't the only things that count when it comes to a jaw-dropping body: If you aren't eating the right nutrients, you aren't going to slim down or build strong, sexy muscles.
See, every time you curl or press, you're actually breaking down your muscles, causing microtears in the fibers. It's when you're resting that your body rebuilds and strengthens your muscles—and in order do so, they need the proper fuel, including these seven vitamins and minerals, identified by experts as a sort of menu for muscle. Follow the pros' recommendations for getting your daily dose of each through food or supplements, and you'll see and feel a difference from head to toe.
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"Calcium is one of the two most important nutrients our body needs for healthy and strong bones and muscles," Dr. Popovitz says. Every time you lift a dumbbell, your muscle contracts, and this mineral gives muscles that cue to contract—and, therefore, grow.
How much? Dr. Popovitz recommends at least 1,200 mg a day. You can get your daily dose through foods like dairy products, green veggies, and fortified dairy-free milk, or a supplement. If you prefer a pill, choose one with D, which your body needs to absorb calcium. Stick to supplements with 500 to 600 mg of calcium and take them hours apart, as your body can only take in that much at a time.