i used to do tae bo all the time. i loved it! i could get through the whole workout no problem. not anymore! i did it tonight for the first time in a long time and oh my! i could barely keep up! when it was over i didn't feel like i had given it my all, but during it was all i could do to keep up! my muscles hurt so bad during! tomorrow i will try again and try to get through more of it!