Frog legs that have been skinned get prepared to be cooked. The chef gives them a little salt and almost instantly they start twitching like mad. Why?
Well, the reason is all in how muscles work. When the cells are intact and fresh they still have stored energy in them in the form of ATP ( Adenosine Triphosphate ). The salt activates the muscles and they use the remaining energy to contract and relax. These frog legs must have had a lot of left over ATP. Muscle stimulation does not always have to happen with salt, it can also be started with electricity.
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