"Tough" is not an exaggeration! This is *SO* good! It's made up of 38 minutes of high/low aerobics plus another 10 minutes for the warm-up and cool-down. You still need your weights because some of the low-impact routines use them -- such as fast lunges. I've been doing this for a couple of years now, but I remember when I first got it, my legs were actually shaking about mid-way through. It packs a lot of wallop into a short time frame.
I highly recommend this one and rank it an A+.

Instructor Comments:
Like the other "Parts" series, this is made up of segments from all the original 6 FIRM tapes,so there are several different instructors.

Annie S.