A member asked:

Can weightlifting lower your immune system? started yesterday for the 1st time in 7 months and the next day got a cold sore on lip

A doctor has provided 1 answer

Exercise,: if anything, should strengthen your immune system. I think you cold sore is a pure coincidence. It can come from exposure to ultra violet rays, if you exercised outdoors.

Answered 3/18/2017

3.6k views

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