Add Yahoo as a preferred source to see more of our stories on Google. Man doing tricep pushdowns. We have more triceps than biceps (they actually make up two thirds of your overall arm). So, if you’re ...

Overhead extensions may be a better exercise for building arm muscle than triceps pushdowns. New research suggests that lifting overhead lengthens the muscle for better gains. The study found ...

The triceps brachii is a three-headed muscle that plays a critical role in elbow extension, pressing strength, and upper arm development. Its long, lateral, and medial heads each contribute ...

Plus, the popular move you need to retire in order to make the gains you want.

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. Suspension trainers ...

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