As you get stronger, you become able to lift heavier and heavier weights. That's the idea at the heart of an often-misunderstood fitness concept: progressive overload. Unfortuantely, there are a lot ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...