Flexible. Increase the maximum number of different joints to rotate (range of motion) to reduce pain and fatigue due to the muscles and tendons shrink based on. Fix cramping.
Better flexibility Increase the maximum possible rotating joints (range of motion) reduce pain, because the muscles and ligaments that hold the contraction cramps.
Flexible, better, increasing the maximum joints will go round (range of motion) reduce fatigue due to the muscles and tendons shrink holder. Solve the cramps.