Do Shorter Workouts Work?

I love working out!  I have since I was in high school (20 some years ago)!  I always have worked out for an hour.  So when Beachbody started coming out with shorter workouts I wasn't sure what the results would be!  Well I'm sold!  I've been doing P90X3 for the last 6 weeks and I'm seeing changes I never knew were possible.  And now I have results from someone that did T25!  Amazing!  These workouts work!  And if by chance you think they don't......you get your money back!  Check it out!  What do you have to lose but weight!