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Are you wearing a device like a smartwatch to track your steps? If so, the goal of 10,000 steps a day may have become a bit of an obsession. But is focusing on this number the best way to improve your health? We ask an expert whether all this counting is really doing us any good.
In the 1960s, in the lead up to the Olympic games in Tokyo, the pedometer was first marketed as a fitness device. One Japanese company developed a product called '10,000 steps' (translated into English). Decades later, the default setting on smartwatches and health apps is this magic number. But there's really no medical reasoning for its introduction.
Should we sweat about steps?
Of course, 10,000 steps is an easy number to remember but it's also a challenge for most people - as it equates to around five miles. And it might not be the best way to improve your health.
"What is most important is the speed at which you walk," she reveals. "Someone could achieve 10,000 steps but at a slow, strolling pace. This won't raise their heart rate so the health benefits would be minimal. Brisk walking - defined as at least 3 mph - is the key. Walking for 10 minutes briskly gives health benefits."
But most of us won't have a clue how fast we're walking. So how can we tell if our walking is enough to improve our health?
Williams explains: "If you walk briskly, your heart rate is faster, you breathe faster and you may feel a bit sweaty. You should still be able to hold a conversation without being out of breath. We call this moderate activity."
It can still be hard to know how much you are challenging yourself when you walk, but there is a free NHS App called Active 10 which monitors your walking and speed. Just one brisk 10-minute walk every day provides significant benefit. And if you can increase that number to three a day, you will have achieved one of the five 'moderately active' sessions per week that is recommended for health.
Williams says: "Many people don't realise that regular brisk walking can reduce their risk of cancer by a significant 15%."
So it's well worth picking up the pace.
How to be more active
One of the main reasons people give for not walking enough, according to Williams, is lack of time. But she believes exercise can be incorporated into your day-to-day life quite easily.
Small, healthy choices can add up. Some of Williams' suggestions include:
"Take the stairs instead of the lift. If you have to use an escalator, walk up it, don't stand still. Park your car furthest away from the supermarket door (pushing your trolley is good exercise too). And if your journey to work or the school run is under a mile, why not walk or cycle?"
If your work is sedentary, try to fit in a quick 15-minute walk at lunchtime. You could even encourage walking or standing meetings in your office, says Williams. Small changes can make a significant difference over time.
Without resistance exercise, we lose muscle mass from the age of forty and more rapidly after sixty. You may still weigh the same, but it's often fat that has replaced muscle.
Williams explains why muscle is so important: "Muscles fight inflammation in the body; systemic inflammation is the cause of many diseases, including cancer and heart disease. The more lean muscle mass someone has, the better it is for their health."
Work your muscles at home
You don't have to go to the gym to work your muscles. At home, do press ups (against the wall if that feels better), sit-ups, lunges, squats and biceps curls (using bottles of water if you don't have weights).
Daily activities, like gardening, playing with children or grandchildren outside, housework and washing the car, all count as part of a workout. For older people, Williams suggests including activities which help promote balance, such as dancing, t'ai chi and yoga.
How much exercise should you do?
The advice from PHE is to make time for 150 minutes (2.5 hours) of moderate exercise a week. So 30 minutes of brisk walking a day, five days a week, would reach this target. The benefits include not only a greater feeling of well-being but a reduction in your risk from cancer, heart disease and type 2 diabetes.
In addition, you should do resistance exercises twice a week at least for around 30 minutes (ideally every other day) so you maintain muscle strength.
Being aware of these small daily targets can make a significant difference to your long-term health.