Mary et all!..Well have completed two days of the 20 minute workout video and must say when I stand up tall can now feel those abdominal muscles for the first time in my life I first watched and practised the basic video and my first response was geez these exercises are so simplistic and are going to be a piece of cake NOT... once I put them into action I must say they are not as easy as they look in the sense that you can feel an immediate plus in the areas you are working I will continue to do the 20 minute workout for awhile until I have the moves down correctly...tried to do a roll over and couldn't get back up at first also getting those legs at a 90 degree angle is still a challenge but am sure after a few weeks will be successful this workout program certainly has my vote one that I think I can stick with for a long time...B