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If you aren’t walking, running, or biking on a regular basis, you’re really missing out something—it’s good for you, it saves money, it benefits the environment, and everybody is doing it. Need another reason? You can now earn money for charities every time you walk, run, or bike, all through your smartphone.

Working hard for a good cause isn’t exactly a new idea. But the creators of CharityMiles, a new application for iPhones and Android devices, have come up with a way for anyone who walks, runs, or bikes to connect with sponsors at anytime. It’s a simple system—download the free application, choose one of nine participating charities, and start moving. For every mile you walk or run, 25 cents goes to your charity. Biking, meanwhile, earns a dime per mile. That isn’t a huge sum, but if hundreds of thousands—maybe millions—of people download the application? The dimes might start to add up.

CharityMiles still has some work to do, including attracting more charities. The company is putting up one million US dollars to fund itself, and its creators are confident that they will attract several sponsors soon. Whether or not CharityMiles gets more funding or attracts more charities, it’s certainly a new way to encourage green living and aid good causes. If you’re already someone who walks, runs, or bikes, scoring some money for your favourite cause at the same time becomes a very easy thing.