I wouldn't say that it's mainly for college kids. I'm a senior exec and work 60 hours/week, yet I find time for 2x/workouts now (cardio am, resistance pm). At least, that's what I've been doing for the past couple of months to get back to a decent level of fitness after being utterly lazy last summer and fall. It takes commitment, for sure. The author suggests modifying the program if you can't do the 2x/day. Granted, I don't have wife and kids, but I do have a fair number of other commitments - and I've got friends who have kids and find time for tri training, marathon training, and bike race training. From what I understand, they have a period of time when that's acceptable. This 28-day program seems to be in the same vein; a temporary program for producing significant results. I'm hoping that this can help me break through boredom with my current routines and also, get me down to the upper- to mid-teens by the end of the 28 days.

i agree pretty much with rsmitty1988, Greg made this program for people who want to get a transformation within 28 days. He cant sit down and make a program for people who got kids, dogs and so on. I am pretty thankful that he even did this program for free... think it this way how many fitness models make programs for free? hm.. none?