5 Answers

Because dancing is hard work, if you're not used to doing it.

11 years ago. Rating: 10
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Most of us on aka can boogy woody all day and all night. 

11 years ago. Rating: 7
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Unused muscles get tired and sore. You’ll get used to it and become all the better person for dancing……...

11 years ago. Rating: 6
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Because you are using muscles that you do not commonly use for running or walking. As the muscles get stronger, your legs will hurt less. 

11 years ago. Rating: 5
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And there is a lot of force exerted on the feet, the nerves are warning you that you have had enough for now.   As muscles fatigue, lactic acid builds up if the blood flow and respiration cannot keep up removing the cellular wastes.  Eventually, you will cramp up, and the muscles will no longer work, until they catch up and remove this lactic acid from their cells.  

11 years ago. Rating: 3
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