Back in my younger days, all exercise was a breeze, and most things I never bothered training for, I just did them. Forward many years, and a few operations later (some very major), and the best advise from anybody is to watch what you eat, and just keep active. Walking is a great start, for anybody of any age, but after a while you want to get your heart rate higher, so a weights session, and cycling, a couple of times a week does wonders for me.
What ever you do, and for people like Tama, who seems to know what to do, please seek professional advise to make your workout time the most efficient it can be. And the key word for our time restricted society, is EFFICIENT.
