Originally Posted by apocalypse
Something better than nothing, I also do only 20 minute cardio. Too lazy
I find 40 minutes...60 minutes of cardio not half as productive as a intense 16-20 minute session. When it comes to cardio there are two choices:
1. Quick and intense 16-20 minute session
2.45-60 minutes worth of low intensity (jogging, ect.)
For preserving muscle the first one is optimal.