Increase your flexibility faster: Hold your usual stretch for 15 seconds. Release it a bit and contract the muscle you're working on for six seconds. Stretch for 15 seconds again. Activating the muscle before stretching short-circuits your body's "not moving any farther" reflex and lets you go deeper.
That's It: We're All Going to Die from Sitting Too Much
Depressing new science shows that none of us is immune.