Your Multivitamin Isn't Enough: The Real Micronutrient Gaps Slowing Down Your Fitness Progress
Most Americans eating a reasonably healthy diet still fall short on several key micronutrients — and for people who work out regularly, those gaps hit harder than you might expect. Before you load up your cart with every supplement on the shelf, it helps to know which deficiencies are actually backed by science and which ones are just clever marketing. Here's what the research says about the nutrients most likely to be holding your performance back.