[aaronapple]

There is no such thing as a 7-minute workout that will completely get you in shape. This is a great set of exercises that, if performed twice with a short break in between and at the level they suggest, will leave you totally wiped and feeling like you received a great workout. When I'm in a good workout rhythm, 4 days a week (2x running, 2x amended 7-minute) seems to work pretty well.

[b_emery]

No, but it's much better than nothing. If you're out of shape, 7 min every other day or even 2x per week is a great start. If you're reasonably fit then I agree, 7 min is not enough. I've been both in the last few months, and I can attribute the 7 min workout to getting me back on track.