With so much research going on in medicine, there are endless causes to raise money for, like AIDS and heart disease. There are many ways to do it, too, such as marathons and bicycle races. There is reward in doing something you enjoy while helping other people. Best of all, anyone can do it.
A great example of this is Climb Against the Odds, an upcoming mountain climb for the Breast Cancer Fund. From June 15 to 21, 2008, about forty people, including actress Sarah Carter (whose credits include the CBS television series "Shark" and the movie "Final Destination II"), will climb Mt. Shasta in Northern California, a tall mountain with glaciers. This is another expedition that follows past mountain climbing events for the Breast Cancer Fund.
So if you can, find an activity you can be proud of doing and a cause to be proud of contributing to. Those in need will certainly thank you for it.