You crush your morning workout — running farther, lifting heavier or getting in one more round of that circuit. But that sweet satisfaction can quickly turn to regret the next morning when you’re too sore to swing your legs out of bed.
Many of us have experienced the burning, aching, jelly-leg feeling that begins hours, or even days, after exercise. But where does it come from and why does it always show up a couple days after certain workouts?
Dispatches From The Front 