12
votes
4answers
750 views

Why does cardio/aerobic exercise lead to muscle loss?

Recently, I've been reading a lot about how cardio reduces muscle mass and strength. The following is an excerpt from crossfit.com that seems to sum up what I've been reading: Aerobic training ...
5
votes
3answers
1k views

Should my running be aerobic or anaerobic?

I'm running every other day, and I run pretty hard. I'm looking for the best way to build endurance so that I can run for longer without wearing out, but I'm also liking the amount of calories that ...