The ATHLEAN “400” Challenge is back only this time it’s X-TREME! We’ve taken the 400 challenge that you loved to hate from AX-1 Training Camp and made it even worse…or better (depending how you look at these things). The XT-400 Challenge is just as fast paced and muscle wracking as it’s predecessor, only now it’s comprised of tougher exercises. But don’t worry, it’s worth it, X-TREME results await!
