More important than the duration is the intensity of the workout. High intensity interval training (HIIT) is as effective in burning fat, if not more (and according to some experts, it is more effective) than lower intensity longer duration workout.
HIIT is especially good for preserving muscle mass.
However, one caveat: HIIT is not for the faint of the heart. It tends to be short, but every minute can feel like an eternity due to high intensity.
``Don't break the chain." -Jerry Seinfeld
``Moments of silence are part of the music." -Anonymous
| Body Fat %: 23.7