I know that cardio, to a certain dgree, can, and often does burn muscle while burning fat. But I need to know a few things.
I lift heavy, hard, and intense, and I do ok when it comes to strength.
My cardio has also been pretty intense the past 3 weeks.
No less than 30 minutes total. 10 minutes on the treadmill at a 15 degree incline at 4mph, and then 20 minutes on the stairclimber, set at level 10.
I don't always monitor my heart rate while on the treadmill, (when I do it's at somewhere between 130-150) but I do when on the stairclimber. When on the stairclimber I keep my heart at 150-170...for the entire 20 minutes. By the time I am done I am beyong drenched in sweat.
Then I hit my full workout which is usually at LEAST a full hour worth of very intense heavy lifting.
I need to drop a lot of fat (as far as I am concerned)NOW, but am I doing too much?