The three Ps that can make a difference in your life.
PALEO- eating no grains, only wholesome fresh foods, like eggs, meats, poultry , fish and non starchy vegetables. No sugar, no wheat or any grains except small quantities of oats if you must have them. This is the diet made famous by Dr Loren Cordain.
Pushups-- Probably one of the best all around exercise. No equipment needed. Anyone can do these. Start with doing them on your knees if you have to. Progress until you can do 20 or more, then go to regular pushups, you hands should be on the floor below your shoulders and your whole body should remain straight. Try to get at least 30 a day or more if you can.
Pullups- The great old-school upper body exercise. You will need a bar of some kind to pull up on.
Hang all the way with your arms extended. Pull up until you chin passes over the bar...extend all the way down again. If you can do 5, then try for 10, I shoot for 15 each time. I hope to do 20 each year on my birthday. I'll be 64 on this next birthday