10 Fitness Myths You Need to Stop Believing When I first started taking fitness seriously, I made a lot of mistakes—not from a lack of effort, but from believing things that just weren’t true. There’s a ton of fitness advice out there, and not all of it is backed by real science. I was doing hours of cardio, skipping meals, and avoiding weights, thinking I was doing the right thing. Turns out, I wasn’t.
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