I had a duathlon Saturday and then got sick Sunday and haven’t trained since then. Today for the first time my legs are stiff and sore as hell.
Why did it takes so long for my legs to become sore?
eccentric muscles contractions ripping the actin and myosin filaments apart. Peak soreness for DOMS is usually 48hr after the activity and can last up to 6 or 7 days if I remember the literature correctly.