
UK guidelines for adults recommend at least two-and-a-half hours of moderate activity a week, in bouts of 10 minutes or more.
But in two separate articles in the British Medical Journal, experts argue the message needs to change. Greater emphasis should be put on making inactive people move more. Make small increases in activity levels, rather than pushing to achieve unobtainable goals.
Previous studies show short periods of walking or just 20 minutes of vigorous activity a few times a month can reduce the risk of death, compared to people who do no exercise.

Just one out of four people between the ages of 65 and 74 exercises regularly. Never assume you're too out-of-shape, or sick, or tired, or just plain old to exercise. An expert claims physical exertion is almost always good for people of any age. Exercise can help make you stronger, prevent bone loss, improve balance and coordination, lift your mood, boost your memory, and ease the symptoms of many chronic conditions. A strong, agile person be less likely to need help. We all want independence.
I start my day with bending and stretching exercises. Then, while I'm sipping a hot drink, I do facial back and arm exercises before half an hour of meditation. Set up for the day, I dress and begin researching the latest news looking for a topic I can talk about.
This pep talk has done me the world of good. From now on, I'm going to stand up during each break in a television program. How about you?