Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. A few weeks ago, I ...

We all know how important exercise is to our overall health. While putting in the time to exercise is important, you also need to monitor how hard you’re working. One way to track your effort is with ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty/Ben Welsh If you’ve never heard of RPE before, it simply stands for Rate of ...

While there are plenty of fancy gadgets you can use to track your effort in the gym or on a run, there’s one core metric that uses no tech at all: the rate of perceived exertion. RPE in the most basic ...