How long should I rest between sets to build muscle?

Nikkiey explains that rest has one job: to let your muscles recover just enough to do the next set at the same intensity. She trained for 30 years with almost no rest and says it held her back. When you skip rest, each set gets weaker, you lift less and you build less muscle. Once she started resting 60 to 90 seconds, she got stronger faster and the muscle finally came in.

The bigger problem for most women is resting too long without realizing it. Nikkiey says that checking your phone, chatting and wandering for water easily turns into four to six minutes. On Ep. 397 she points out that this alone can add 30 to 40 minutes to a session, and in her videos she says your muscles cool down and you lose the stimulus you just built. Her rule is simple: set a timer, and start the next set when it goes off, not before. She also notes that women tend to recover between efforts faster than they expect.

Rest is also something you can adjust on purpose. On Ep. 97 she describes cutting rest, for example from 90 seconds to 60, as one way to apply progressive overload, because it raises the demand on the muscle. If your workouts have felt like a lot of effort for little change, the fix may be the plan, not you.