This high-efficiency workout style boosts heart health, builds lean muscle, and transforms your fitness routine — all without a gym.

Add Yahoo as a preferred source to see more of our stories on Google. Woman doing barbell reverse lunges. A key element to building strength is progressive overload, where you gradually increase the ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. This summer get in shape with just a few ...