Some people are still of the opinion, even in this day and age that TIME translates to RESULTS.  They think that if they don’t spend “x” amount of time in the gym, then the workout wasn’t worth it.  They sneer at things like Crossfit, P90X and Insanity.  They won’t attend bootcamps or 30 minute training sessions.  What could I possibly get out of THAT?  I have to workout for an hour or more to get real results, burn real fat and see real gains.  We know that NOTHING could be further from the truth.  Whether the workout is 20 minutes, 30, 60, whatever.  The only worthless workout is the unaccomplished workout.  Study after study will bear out that a hardcore 20 minutes can be as, if not MORE beneficial than a soft 60 minutes.  Don’t you suppose that there’s a reason that P90X, Crossfit and Bootcamps are popular?  People see results.  They work.  You can get the same, if not better benefit than a traditional hour of cardio in half the time?  Sign me up!  Sign you up, too.  Get busy.  Get active.  Move.  The only workout you will regret is the one that you don’t do!