Strength and conditioning coach Dave Rienzi said three tips from the Rock's workouts can boost your gains. Negative or eccentric reps increase tension during exercise to build more strength and muscle ...

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 new study shows that ...

You're currently following this author! Want to unfollow? Unsubscribe via the link in your email. Dwayne "The Rock" Johnson's strength coach shared three key tips for maxing out your strength in the ...