Why does you experience cramps in your leg muscles after doing exercise?

Answer 1

Excercise cramps are caused by hyperexcitability of the nerves that stimulate the muscle causing the muscle or part of the muscle to contract in spasm and not relax. Dehydration and the associated lowered magnesium, sodium and calcium levels in the blood cause the excitability. Follow the link.

Answer 2

Your muscles need oxygen to function correctly, for example if someone is running but not breathing properly, it is likely they may cramp up, oxygen circulates through the bloodstream, so if you are out of shape or have body circulation problems it can increase the chance of getting cramps, also certain food RIGHT before exercise can worsen cramps like soda, Milk Chocolate, and a majority of junk foods and sweets.

Answer 3

When you exercise harder than you normally do you muscles hurt. They hurt because you pulled a muscle, they will ushually hurt for 2-3 days, then they get better. But the main thing is that you exercise harder or for the first time in a while!

Answer 4

A few things can be the cause of soreness after exercise:

1. Your body just isn't used to it yet. (If it's a new stretch)

2. Doing the exercise without stretching afterward.

3. Doing the stretch too roughly, or doing it wrong.

4. Pulling a muscle while during the exercise.

A:

Muscle soreness is a direct result of tearing the muscle fibers during exercise. This is how the muscles grow; your body repairs the numerous micro-tears, which builds up the muscle.

Excessive soreness comes from either trying to do too much at once (tearing more fibers than the body can repair right away) or from a build-up of lactic acid in the muscles themselves. The solution is to not try to work out by too much, too fast; and to gently stretch both before and after exercising (warm-up and cool-down).

The stretching increases blood flow to the muscles, enabling it to both bring in more muscle-building protein and carry away waste products (like lactic acid) more effectively.

If your body is still sore 12 hours later, or after a full night's sleep, then the best solution may be to gently stretch again without performing a full workout. If you're still in severe pain after 12 hours, or still sore after two full days, then you may have pulled something; see your doctor.

Answer 5

There is lactic acid build-up due to anaerobic cellular respiration within skeletal tissue (under hypoxic conditions).

Answer 6

lack of potassium. eat a bananna.