They say the world exists only for so long as you are alive. Else, world is nothing but oblivion. Ergo, we should live as close to nature as possible, and abstain from intoxicating and inebriating foods and drinks. Your physical body, the best of your material possession, needs to be preserved at every cost. For this, you would do well to remember following points.

Positive Living
For a youthful body you ought to have a creative bent of mind, else, there is little in life worth your while. And a creative life style mandates living by objectives. A life without aim is dull and basal. So, remain cool headed, always smiling, dignified, and enjoy your life to the hilt.
Proper Physical Exercise
Nothing does as good for your health and mind as proper exercise, or yogasanas, Hence give them top priority in life. These exercises improve circulation of blood, and supply that extra oxygen to brain which is critical for efficient working of nervous system.
Cultivate good habits
To keep your body fightingfit all your life, make way for healthy and altruistic habits in your daily routine. Addictive drugs and intoxicants should be avoided like plague. Inebriating substances eat into vitals of mind and body much the same way as termites turn wood into dust. Sleep too is paramount. Good and refreshing sleep is a sign of good health. So, make healthy habits a way of life and keep this body—verily called temple of living God—clean and strong.

Benign Body weight
Always keep your body weight in check. Avoid food stuffs that promote obesity and endanger health.
Balanced Diet
To keep body weight in syn with your age, food and drinking habits need to be looked into. In order to have a long and meaningful life, your food must be nutritious and easy to digest. So, take milk, ghee, fruits—succulent as well as dry—in sufficient amount. Let green vegetables be only half boiled, or in raw form in salad assortments. Wheat bran shouldn’t be separated (by sieving) from wheat floor, as whole wheat bread is far more superior than the white variety. And most of all—don’t worry—be happy.
Establish cordial and compassionate relationships
Health of body and mind is impacted greatly by bonhomie in your relationship with others. Shove aside worldly worries and be upbeat. Psychologists testify to the immense help which emotional bonding with family and friends can provide to your physical, mental and spiritual well being.