Like the legendary T-Rex we have short, weak arms for our size. It takes a lot of work to make them stronger and no matter what we do, we can't make them longer. Luckily, with a little consistent work, over a period of time, we can enjoy arms that can grip, pull, push, lift and throw with less effort and greater ease. And to sustain them better we also need strong abs. The Arms & Abs Challenge provides you with an advantage no T-Rex ever had.