25 ways to live longer

Get laughing
A good laugh is like a mini-workout - 100 to 200 laughs are equivalent to ten minutes of jogging or rowing, says US cardiologist, Dr William Fry. Research also shows that it lowers levels of stress hormones, and heightens the activity of the body's natural defensive killer cells and antibodies.

Move to France
A report by the World Health Organisation found that the French outlive the British. They come third in the world rankings, compared to the UK at 14th. And better diet appears to be the deciding factor. French people tend to eat more fresh food, shop every day at local markets and rely less on convenience food than we do.

Go to bed later
Sleeping more than eight hours a night may reduce your life expectancy. A study in the Archives of General Psychiatry, US, found that people who get only six to seven hours sleep a night live longer. People who sleep eight hours or more, or less than four hours, a night were shown to have a significantly higher death rate.

Make your marriage work
Being happily married for a long time leads to greater life expectancy for men and women. However, divorcing then remarrying actually increases the risk of dying prematurely, says a study in Health Psychology Journal.

Walk, run, jump
Fit women have a 40 per cent less chance of developing coronary heart disease than those who don't exercise regularly, says Dr Ken Cooper of the Cooper Institute of Aerobic Research, US. He also found that people in the lower 20 per cent of fitness were three times more likely to die prematurely than the fittest group.

Have sex
Couples with a healthy sex life can look up to seven years younger than those who don't, according to a study by Dr David Weeks at the Royal Edinburgh Hospital. This is because sex reduces stress, leads to greater contentment and better sleep.