Marika yes, they are only 30 minutes.
Right now BodyShred is the only thing I've doing because frankly they are tough enough that I'm pretty wiped out by the time I'm through. Jillian addresses that in the intro to the program.
Best quote from Jillian in the first workouts? Jillian responds to Carolyn, a background exerciser, " I know I must have been dropped on my head when I was a baby." Out of context, it might not be funny, but it's really comical during the workout.
Lesia