Physical activity and exercise can help you stay healthy, energetic and independent as you get older.
Many adults aged 65 and over spend, on average, 10 hours or more each day sitting or lying down, making them the most sedentary age group.
They're paying a high price for their inactivity, with higher rates of falls, obesity, heart disease and early death compared with the general population.
As you get older, it becomes even more important to remain active if you want to stay healthy and maintain your independence.
If you don't stay active, all the things you've always enjoyed doing and taken for granted may start to become that little bit harder.
You may struggle to pursue simple pleasures, such as playing with the grandchildren, walking to the shops, leisure activities and meeting up with friends.
You might start to get aches and pains that you never had before, and have less energy to go out. You may also be more vulnerable to falling.
This can all lead to being less able to look after yourself and do the things you enjoy.
There's strong evidence that people who are active have a lower risk of heart disease, stroke, type 2 diabetes, some cancers, depression and dementia.
If you want to stay pain-free, reduce your risk of mental illness, and be able to go out and stay independent well into old age, you are advised to keep moving.
It's that simple. There are lots of ways you can get active, and it's not just about exercising.
"As people get older and their bodies decline in function, physical activity helps to slow that decline," says Dr Nick Cavill, a health promotion consultant. "It's important they remain active or even increase their activity as they get older."
Most people as they get older want to keep in touch with society - their community, friends and neighbours - and being active can ensure they keep doing that.
Physical activity is anything that gets your body moving. It can include anything from walking and gardening to recreational sport.
Aim for at least 150 minutes of moderate activity every week.
Ideally, you should try to do something every day, preferably in bouts of 10 minutes of activity or more.
One way of achieving 150 minutes of activity is to do 30 minutes on at least five days a week.
Examples of moderate-intensity aerobic activities include:
Daily chores such as shopping, cooking or housework don't count towards your 150 minutes, because the effort isn't hard enough to raise your heart rate, although they do help break up sedentary time.
In addition to your 150 minutes target, try to do some activities that work your muscles. This can include:
As well as regular physical activity, try to reduce the amount of time you spend sitting down during the day. This means avoiding long periods of TV viewing, computer use, driving, and sitting to read, talk or listen to music. Find out why sitting is bad for you.
What you do will depend on your own circumstances, but as a guiding principle, it's a good idea to do activities that you enjoy.
If you're already active, you may find it useful to know that 75 minutes of vigorous activity over a week is as beneficial as 150 minutes of moderate activity.
Research shows that it's never too late to adopt and reap the health benefits from a more active lifestyle. For example, older adults who are active will reduce their risk of heart disease and stroke to a similar level as younger people who are active.
If you've been inactive for a while, you can build up your activity gradually to reach recommended levels. You'll still be improving your health in the process, and you'll reduce your risk of falls and other ailments.
"The biggest benefits come to those who start from scratch," says Dr Cavill. "It's moving from a sedentary lifestyle to a moderately active one that makes the biggest difference to your health. The more you do, the greater the health benefits."
Click on the links below for more ideas on raising your activity levels:
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