Check out This One-Armed Bodybuilder

This bodybuilder has been making gains thanks to his prosthetic arm.

Mak Okun, 24, from Arizona, USA, works out with a prosthetic arm. (Photo: AP screengrab) 

Mak Okun, 24, from Arizona, USA, was born without a left arm. But he never allowed it to hold him back from getting a chiseled body.

Mak loved to work out and for the longest time he did so with just one arm. This had an adverse effect on his back.

After working with Advanced Arm Dynamics, he got a prosthetic arm. The prosthetic works on man power, has a pin lock system and can perform functions that a wrist joint would. It helped Mak to lift massive weights and even out his body.