It could be a physical challenge or something which uses your skills or time. 25 push ups per day for 25 days? Maybe you could commit to wash 25 cars, make 25 cupcakes or cycle 250 miles in a month!​​

​Or how about an ELITE challenge and travel 25 hundred miles in a year under your own steam!!! ​

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​We want you to come up with an idea for an activity which is based upon a multiple of 25 for which you could be sponsored.

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If you simply want to donate (without the physical pain!) then could you give £25 per month for 25 months?