4) Sleep for at least 6 hours:

Sleep is one of the most important habits to keep oneself fit and fine. Lack of sleep can increase the risk of dying early. Less sleeping hours can increase the heart relate diseases, stroke, blood pressure and cholesterol, whereas, good sleeps help you to keep away stress, depression, inflammation and heart diseases.  One has to sleep at least 6 hours to stay fit, as it gives energy for the forthcoming day. So, it is always better to add more days to your life rather than to skip sleep to stay awake for more hours. "Sleep is one of the most important functions that our body uses to regulate and heal cells," says Ferrucci.

5)  Laugh often:

Laughter is an excellent medicine to stay hale and hearty. Laughter gives you good feelings from inside which consequently protect your heart. It also kicks start healthy physical processes within the body. Laughter fortifies immune system, improve energy level and reduce stress. To keep your mind and body balanced, laughter works faster than any other medicines, which in turn will help you to live longer.