The more we read about [Josh Pieper]’s quadruped, the mjbots quad A0, the more blown away ... leaves plenty of bandwidth for real time dynamic control. The motors and gearboxes are also impressive.

Both Dr. Hasson and Dr. Fata-Chan offer lunges as an example of a classic stretch that targets the hip flexors directly.

So in addition to strengthening the quads, a combination of foam rolling and static and dynamic stretching will help maintain healthy knee mobility and boost recovery, she explains. Instructions ...