Why muscle cramps/spasms/charlie horses hurt. They’re your own muscles you use and contract voluntarily all day, but during a charlie horse, the same muscle contracts and it hurts?

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I vaguely understand the chemical mechanism responsible for charlie horses at the cellular level, but my question is why you can walk around, flex/extend your leg and feet, contract and shorten your calf muscle all day, but if you hit that certain spot or sometimes out of nowhere, your calf will go rogue and seize up on its own and HURT BAD. Isn’t it the same muscle being used?

Or for me, the same happens in my toe. I can point it gently and relax it, but if I point it a certain way, my whole foot will twist up on its own and be extremely painful, not at the joints, but in the muscles I was just using a moment ago *without* pain.

Basically, why *doesn’t* my leg hurt when I use it but when it uses itself, it hurts like hell?

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2 Answers

Anonymous 0 Comments

The difference is the cause of the contraction. When you normally contract your muscles, it’s voluntary and in a way that the muscle can go. Charlie horses are usually caused by a negative stimulus. So if you’re dehydrated, your muscle will contract involuntarily giving you a Charlie horse because when the muscle contracted, it didn’t have enough water to contract smoothly. Most of the time Charlie horses come from something like intense workouts, long distance running, or good ol fashioned dehydration. It’s your bodies way of telling you something ain’t right

Anonymous 0 Comments

because it is involuntary and all you can do is wait for it to stop hurting. Chiropractic care of calf muscle cramps/spasms: The most popular explanation of charlie horse calf muscle spasm or cramp is that there is a build up of lactic acid in the muscles due to overuse. Other causes may be dehydration, electrolyte imbalances and malnutrition. Cramp (or ‘Charlie Horse’) referred pain generally occurs in the lower leg, thigh or arm depending on which muscle group has cramped up on you. It can also occur when two opposing muscle groups contract at exactly the same time (such as abdominal and back muscles contracting at once).