Women who walk for an hour a day can cut their chance of breast cancer by 14%, experts have said.
While it is well known that being active cuts risk of the disease, this is the first study to specifically look at the effect of walking.
The American Cancer Society study involved 73,615 postmenopausal women, of whom 4,760 were diagnosed with breast cancer during a 17-year follow-up.
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Take A Swim
You don't have to be Rebecca Adlington to get a water workout. Even some leisurely splashing around can shave off 200 calories, and it's a great way to stay cool in the heat, too!
Stand At The Bar
Rather than nursing a drink sitting down, try standing with your drink. <a href="http://www.health.com/health/gallery/0,,20534367_4,00.html" target="_hplink">Leaning against a high stool</a> is a step up from sitting, but can be more comfy than standing all night, <em>Health</em> magazine reported.
This old favorite is fun for kids and adults alike, and can burn 100 calories in just 30 minutes. <em>Flickr photo by <a href="http://www.flickr.com/photos/machineisorganic/6740536715/" target="_hplink">Machine is Organic</a></em>
Let the music move you when you're out on Saturday night. A little boogying can burn 150 calories in just 30 minutes.
Throw A Frisbee
You're not chained to that park bench! If you're already enjoying the outdoors, why not throw around a Frisbee or a football, pass a volleyball or kick a soccer ball? It doesn't have to be strenuous -- you don't even have to be any good! -- but it will get you up and moving. <em>Flickr photo by <a href="http://www.flickr.com/photos/perspective/458811240/" target="_hplink">Elvert Barnes</a></em>
Go On An Exercise Date
If you've got a date night planned this weekend, skip dinner and a movie in favor of something that gets you off your rears. It doesn't have to be a trip to the gym or a jog -- it can be anything active you like doing together. <em>Flickr photo by <a href="http://www.flickr.com/photos/78428166@N00/7283892652/" target="_hplink">Tobyotter</a></em>
During the busy week, you sometimes might just let your pet out in the backyard to dig up his own trouble. This weekend, spend a little extra time moving with him. Play fetch, give him that much-needed belly rub or take him on an extra-long walk. <em>Flickr photo by <a href="http://www.flickr.com/photos/footloosiety/4255290603/" target="_hplink">footloosiety</a></em>
Catch Up On A Walk
If you've made plans to meet a friend for coffee, take your catch up session to-go instead and gab on a walk. Even strolling at a snail's pace will burn 85 calories in 30 minutes!
Play Pub Games
Put down the drink for some table football or pool if you're at a pub this weekend that offers it. Thirty minutes of pool can shave off 85 calories, not to mention you may save yourself a few if your hands aren't wrapped tightly around that pint glass. <em>Flickr photo by <a href="http://www.flickr.com/photos/15216811@N06/5842783313/" target="_hplink">Nicola since 1972</a></em>
Take A Hike
Head for the hills! Depending on where you live, a hike can be a weekend expedition or a quick afternoon adventure. It's a change of scenery and a great way to spend some time outdoors. If you're feeling sporty enough to tackle some hills, you can burn almost 250 calories in just 30 minutes. <em>Flickr photo by <a href="http://www.flickr.com/photos/mikebaird/4104101152/" target="_hplink">mikebaird</a></em>
Go Window Shopping
Those people who do their exercise walking around the mall are onto something. Whether or not you plan to buy anything, browsing around your favorite shopping center gets you moving -- especially if you decide to wiggle in and out of a few things in the dressing room. <em>Flickr photo by <a href="http://www.flickr.com/photos/jimmyharris/2774384836/" target="_hplink">jimmyharris</a></em>
Visit A Museum
Spend some time strolling through the halls and galleries of your favorite museum. You'll give your brain a workout while you're at it!
Get A Takeaway Instead Of Delivery
Pick your favorite nearby joint and walk to pick up your meal.
Wash The Car
Sure, it might take a little longer than sitting through the drive-thru, but you get the pleasure of working those muscles a little bit.
Instead of sitting at a restaurant waiting to be served, why not whip something up at home? You'll be on your feet slicing, chopping, mixing and more, not to mention cleaning up after yourself. <em>Flickr photo by <a href="http://www.flickr.com/photos/janicecullivan/4262146921/" target="_hplink">mamaloco</a></em>
Tidy Up The Garden
Spending an hour digging, crouching, weeding and planting in your garden <a href="http://www.huffingtonpost.com/2012/05/24/memorial-day-chores-calories_n_1543691.html#slide=1018494" target="_hplink">can burn more than 300 calories</a>. <em>Flickr photo by <a href="http://www.flickr.com/photos/7682623@N02/7343305940/" target="_hplink">auntjojo</a></em>
Take A Bike Ride
You don't have be imitate the Tour de France! Even the most casual rides can burn 200 calories an hour. Don't own a bike? Many cities now have <a href="http://www.usatoday.com/money/economy/2011-05-08-bike-sharing-programs_n.htm" target="_hplink">bike share programs</a> that allow you to take a short spin for a small fee, and some parks have bikes available for rent, too. <em>Flickr photo by <a href="http://www.flickr.com/photos/chinny_chin_chin00/6137088467/" target="_hplink">machernucha</a></em>
It's not just for dads in bowling shirts! Grab a pair of nerdy-chic shoes and aim straight. You may even wiggle a little arm workout out of it! <em>Flickr photo by <a href="http://www.flickr.com/photos/junklab/68904368/" target="_hplink">junklab</a></em>
Start A Wii Fit Competition
Dreaming of a couch-potato weekend? Turn that screen time into something more productive by challenging a roommate, spouse or kid to a Wii Fit boxing or tennis match. <em>Flickr photo by <a href="http://www.flickr.com/photos/sashawolff/3190273060/" target="_hplink">SashaW</a></em>
The researchers found that moderate activity in the form of walking an hour a day was associated with a 14% lower risk of the disease compared to women who were least active.
Among all women in the group, 47% said walking was their only recreational activity and women were far more likely to take part in walking, dancing or aerobics than vigorous activities like running, swimming, and tennis.
Among those women who reported walking as their only activity, those who walked at least seven hours per week had a 14% lower risk of breast cancer compared to those who walked three or fewer hours per week.
The study also found that women who took part in more vigorous activities for an hour a day had a 25% lower risk of breast cancer than the least active, which echoed findings in other studies.
The results were unaffected by factors such as a woman's weight or whether she used hormone replacement therapy.
Dr Alpa Patel, senior epidemiologist at the American Cancer Society in Atlanta, Georgia, said: "Our results clearly support an association between physical activity and postmenopausal breast cancer, with more vigorous activity having a stronger effect.
"Our findings are particularly relevant, as people struggle with conflicting information about how much activity they need to stay healthy.
"Without any other recreational physical activities, walking on average of at least one hour per day was associated with a modestly lower risk of breast cancer.
"More strenuous and longer activities lowered the risk even more."
Dr Patel said the majority of women reported some daily walking and therefore promoting walking could be an effective strategy for increasing activity.
"We were pleased to find that without any other recreational activity, just walking an average of one hour per day was associated with lower risk of breast cancer in these women."
The authors said this was the first study to report a lower risk for breast cancer among postmenopausal women specifically related to walking.
Baroness Delyth Morgan, chief executive of Breast Cancer Campaign, said: "This study adds further evidence that our lifestyle choices can play a part in influencing the risk of breast cancer and even small changes incorporated into our normal day to day activity can make a difference.
"We know that the best weapon to overcoming breast cancer is the ability to stop it occurring in the first place.
"The challenge now is how we turn these findings into action and identify other sustainable lifestyle changes that will help us prevent breast cancer."
Public Health England should conduct an audit of existing lifestyle information on preventing the disease, she added.
There are an estimated 570,000 people living with breast cancer in the UK.
Around 50,000 women and 400 men are diagnosed with breast cancer each year and around 12,000 women and 80 men die from it.
Dr Hannah Bridges, senior information officer at Breakthrough Breast Cancer, said: "We've known for some time that being active can reduce a woman's risk of breast cancer.
"Breakthrough Breast Cancer advises that 30 minutes of moderate physical activity a day (or 3.5 hours a week) can reduce breast cancer risk by at least 20%.
"Any activity that raises your pulse reduces your risk - so regular brisk walks are an easy and free way to get active."