Thanks for the link. I found it interesting.
I am constructing and adjusting my fitness programme as I go along. Because of my age and lack of fitness caused by years of overeating and exercise neglect I decided to start slowly and build up. I began with HIT rowing and later added the Big Five from Body by Science. I bought You Are Your Own Gym but found it far too hard. I do squats with a weight rucksack, dips between chairs and pressups against the side of the bath. I bought a pull ups/chins/dips tower and am slowly building myself up to do full bodyweight exercises. I already owned some weights and have been using these for arm & shoulder work. Lastly, I've now bought a sandbag and will start using it next week. Once I have built my overall fitness up, I'll revisit YAYOG.
Why use a sledge hammer to crack a nut when a steam roller is even more effective, and, is fun to drive.