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A 26-year-old female asked:

Yesterday i walked about 3 miles and felt fine. but this morning my leg (right thigh) was sore and it has been getting worse all day. is it a strain?

1 doctor answer1 doctor weighed in
Dr. Charles Gordon
Specializes in Adolescent Medicine
Could be you lost K: If that was a more than your usual amount of exercise for you it could be a muscle sprain or it could be muscle cramping because of electrolyte loss, in particular potassium. Drink some rehydration fluid when you are going for a longer than usual workout.

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Last updated May 30, 2016

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