Maybe you should try the Focus T25 program. It's only a 25 min workout (28 mins with the cooldown) so it's short. It's a 10 week program, the first half is one set of DVD's and the second half is another set of DVD's. Each week you do a different DVD a day (Friday is a double day so you do 2), Sat is a rest day and Sunday is the stretch DVD. I think it's challenging and I like how you don't do the exact same thing every day like with 30ds. Plus you get the rest day, which is great (since it's a double day the day before). I'm enjoying it, so that's what I would suggest!