New research suggests the number of reps you do may matter far less than most people think.

To boost your running performance, you consider strength training, but now you’ve got two major questions: Is that effort really necessary? And should I do high reps at a lower weight or low reps at a ...

When you lift a weight, how many times should you lift it? Supposedly, there’s a correct “rep range” to use to build strength, and a different rep range to build muscle size, or endurance, or to “tone ...

Researchers examined studies that looked at the benefits of strength training for running performance—particularly running economy—and found it does improve efficiency. Comparing heavy weights and low ...