Muscle spasm: Most likely from the work you are doing during sex. Sex is hard work but usually pays off with much pleasure. However, you may be favoring one leg or the other as you work during sex, and have a muscle spasm. Could be electrolytes low such as sodium or potassium. Try taking a multi-vitamin every day, keep yourself hydrated well, and try to keep up good nutrition.
Answered 4/22/2014
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2 doctors weighed in across 2 answers
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