Originally Posted by Sleazylee

I don't know exactly what your goals are so it depends on whether your focusing on putting on muscle or leaning down. This is a PREFERENCE question so your going to get alot of opinions. No one that I know has actually scientifically proved the optimal order of cardio/weight training sessions.

If you do your cardio first, you are using up the available glycogen that is built up in your muscles and therefore your weight lifting session will suffer afterwords in my opinion. I would personally recommend doing cardio AFTER your weight training because doing cardio after weight training puts your body in a state where you are able to burn more fat than normal because the glycogen in your blood is depleted. And from what I was told when I had this question a while ago, is if you stay within your target heart rate you wont burn any more muscle than doing cardio 10 hours before or after.

Hope that helps and if you want stop by and make a post in the new forums in my sig, some others may have opinions that can help too.