Diet related. Carry out the daily work.

Eating fewer calories will increase his body's efficiency. That's because eating a little less each day will improve cells' effectiveness, enhancing the body's ability to repair itself and thereby increasing longevity. He can go with small regular meals throughout the day. Proportionately, it can involve cereals,protein offcourse, fruits and veggies. It will help build immunity and stamina. Snacks can be a glass of milk, some nuts. He should be walking 30 minutes a day..Once comfortable with that -- and have checked with your doctor -- you can add weight-bearing, flexibility and balance exercises to your routine. Depending on your age, you also should be able to do a specific number of push-ups and sit-ups in one minute. He can 10 to 14 push-ups and 15 to 19 sit-ups.