Why do my muscles feel sore after exercise?

Starting within a day of your exercise session, your muscles begin to seize up, and you feel more and more uncomfortable.

For the next couple of days, you move like a robot, find it hard to dress yourself, and the simple act of walking down a set of stairs will see you groaning in agony.

DOMS is the hallmark of eccentric exercise. This is any exercise that causes a muscle to lengthen while it is under tension. 

 Examples of eccentric exercise are running (particularly downhill), the lowering movement of a bicep curl, and the downward phase of a squat.

DOMS is the hallmark of eccentric exercise. This is any exercise that causes a muscle to lengthen while it is under tension.

DOMS and eccentric exercise

Examples of eccentric exercise are running (particularly downhill), the lowering movement of a bicep curl, and the downward phase of a squat.

First, the forces generated during the eccentric movement damage the muscle structure and the surrounding connective tissue. This causes an imbalance of calcium, which leads to further damage.

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