I started doing P90X about 3.5 years ago. It's been a lifestyle change where I've made a commitment that I will work out 5 days a week (rest on the weekends) and I don't let anything else get in the way of this. I'm flexible as to when this happens - but I WILL work out for 1 hour every day!

Also I started Testosterone Replacement Therapy. This has been amazing! Whereas I had no energy after work and no interest in sex, it changed within a week after my testosterone went from 311 ng/dl to 1100 ng/dl. (And my wife was thrilled!) Furthermore because of the workout routine, I have gained 10 pounds of muscle and lost 5 pounds of fat - and have the DEXA scans to prove it. (This is after the first 3 years of P90X and having lost 45 pounds, so these gains in muscle and loss of fat was a bit of a pleasant surprise.) My strength is greater than it was in highschool. My energy level is higher, but not at the highschool level - but close.