The Palms-Up Solo Sky Tricep Smasher

Pressure Cascade · Mechanism

Hold a dumbbell overhead with your palm facing backward — yes, backward, toward the wall behind you — and extend your elbow to press it up. That's the One-Arm Supinated Dumbbell Triceps Extension, a beginner tricep exercise that uses a supinated grip to target the triceps in yet another unique way. If you've been doing tricep extensions the same way your whole life, this variation is about to wake up some muscle fibers that didn't even know they had a job.

You hold a dumbbell in one hand with your arm extended overhead, palm facing backward — that's the supinated position, the opposite of the pronated grip, like you're holding an ice cream cone upside down and refusing to admit it. You bend your elbow and lower the dumbbell behind your head, then press it back up to full extension, squeezing your tricep at the top. The supinated grip changes the relationship between your forearm and the resistance, shifting emphasis to the lateral head of the tricep — the one on the outside of your arm that creates that horseshoe shape when you flex.

This exercise might feel awkward at first, because the supinated grip overhead isn't a natural hand position for most people. But once you get used to it, you'll find that the supinated extension provides a unique contraction that you can feel in parts of your tricep that other extensions don't seem to reach. It's like discovering a hidden room in a house you thought you knew well. Press up, lower down, and smash those triceps with a grip variation that keeps your muscles guessing and growing. Your arms will thank you with definition so sharp that you'll be accused of having triceps surgically installed