but deliver a significant metabolic boost far beyond a few bicep curls. Exercise researcher and YouTuber Jeff Nippard shares a science-backed leg day workout, and if you were hoping to skip leg ...

On every rep of preacher curls, I only ever go about half — maybe two thirds — of the way up,' Nippard explains. 'Two separate studies found better growth by staying in the bottom half on ...

Bodybuilder and exercise researcher Jeff Nippard has amassed 5. ... doing the bottom half of pull-ups or bicep curls. Here are the four exercises Nippard uses lengthened partials on in his own ...