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 ...
Can someone put in human terms what does it mean to work out in "anaerobic pulse zone"? Update: I mean anaerobic heart rate in context of running on a treadmill. I'm 26 and while running on 12km/h ...