If you’re not quite sure what to say, here is a suggestion to get you started. The most important thing is to tell people what you’re up to, why the challenge is important to you and what you’re raising money for: From the 1 September, I’m going to be completing the September Sit Up Challenge for Macmillan Cancer Support. This challenge is really important to me. Everyone who gets cancer deserves life-transforming support and so I’m doing whatever it takes to help Macmillan to be there for everyone with cancer. Any donation amount will be greatly appreciated. And I’ll share updates as complete the challenge. Thank you!