Nancy Cole demonstrates performing a one-arm overhead extension while standing on a BOSU, a half-moon shaped balance trainer. Nancy Cole demonstrates performing a one-arm overhead extension while ...

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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 ...

Building serious arm size takes more than pressing on repeat. To fill out a sleeve and add lockout strength, put the triceps extension in regular rotation. This classic elbow‑extension move is one of ...