How to age gracefully?

The greatest happiness usually comes not in youth, but in old age. Studies show that men generally are happiest during their middle sixties, women
during their seventies. Unhappiest time: Early fifties for men, late forties for women.

Intelligence doesn't necessarily decline with age and neither does an individual
learning ability. Crystallized intelligence-the ability to make judgments and solve
problems by using one's accumulated information-actually increases over the years. Memory loss due to age is usually confined to unimportant matters, such as phone numbers. The key factor is mental alertness. People who stay socially and mentally active suffer no decline in mental powers.