Just think: Iron Man. Iron clad. Iron fist. It’s no coincidence the mineral conjures images of strength and energy—because that’s what it does for your body when you eat it.
“Iron is essential for our bodies to function because it helps blood cells carry oxygen to where it’s needed,” says Margie Saidel, R.D. at Chartwells K12. That’s especially important if you’re working out regularly, since your muscles need a regular supply of oxygen, especially if they’re under a lot of strain.