I have seen various bodybuilding sites claim that running releases cortisol which 'eats' away muscles.
Is this true? Do muscles really get affected by running? Not talking about a marathon or any long distance event, but 2-3 miles a day.(I know running long distance events reduce your musculature)
Would it make me lose muscles?
But, Navy Seals do incorporate running a few miles daily in their schedules so there must be some benefits.