Measuring your effort

In the plan, you’ll need to play close attention to your rate of perceived exertion (RPE), which really just means how hard you’re working on a scale of one to 10. Let’s call it effort. Anything below level 4 doesn’t really constitute a workout. Here’s a

4-5

You could have a long chat with a friend at this pace

6-7

You can manage a few sentences now, but it’s less comfortable

8-9

You’re breathing hard and can only manage one word at a time

10

This is your absolute max. Talking is not an option