I really like Amy Dixon. All her dvds are wonderful, but her Breathless Body dvd is very good - It's 8 different exercise moves of Tabata style training - 20 seconds exercise, then 10 seconds rest, with a slightly longer rest in between each different exercise move. Each move is done 8 times. There are 3 levels of exertion to choose - beginner, intermediate, and advanced, so it's easily modified to specific needs. What I really like most about Amy's dvds is that she is very encouraging and likeable - it really comes across that she truly wants you to succeed.