Question

Asked 5 years, 1 month ago

DOES DISTANCE AFFECT THE IMMUNE SYSTEM?

DOES DISTANCE AFFECT THE IMMUNE SYSTEM?

I am a 66-year-old male who has been running three or four days for the past six years. I average 20 to 25 miles per week, with one 9-mile run always included. I have been told that running up to 90 minutes enhances your immune system, whereas any more than that degrades your immune system. Is this rule of thumb accurate?

Timothy D. McCollum, Bloomsburg, PA

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