Despite having severely underdeveloped legs caused by Proximal Fimoral Focal Deficiency (PFFD) he is easily able to defeat opponents twice his height at arm-wrestling.
In fact he has so much upper body strength he's a world champion arm wrestler who can crush challengers with no disabilities.
Moreover, he is going to climb Everest.Well done!
And in further astonishing displays of muscular prowess determined Joby, who has just become a dad for the first time, amazes onlookers as he lifts huge weights and does push ups on just one hand.
With his insatiable appetite to reach new physical heights he has also begun a gruelling personal training program in mountain climbing. After earning crucial experience in the lower Himalayas' and New Zealand his new dream is to climb Mount Everest.
"It could take me eight years until I'm ready," he said. "But with everything I've achieved I know I can do it."