In case it gives you any ideas, here's a killer high intensity fat burning workout that I did with a friend today... the entire sequence was done in 11 minutes and we were drenched in sweat from the intensity. You can do more or less based on your current fitness level:
a. 1-arm dbell swings (alternate arms every 5 reps) - 3 minutes straight as many reps as possible.
rest 1 min
b. 1-arm dbell snatches (alt arms every 5 reps) - 3 minutes straight as many reps as possible.
rest 1 min
c. Dbell renegade rows (alt arms after each rep) - 10 reps each arm.
rest 30 seconds
d. Floor mountain climbers - 30 seconds max reps.
rest 30 seconds
e. Floor mountain jumpers - 30 seconds max reps.
Total workout time = 11 minutes of metabolism boosting insanity!
It may sound like an easy and short workout, but those first 6 minutes of non-stop swings and snatches will leave even the leanest and meanest trainee gasping for breath.