Some of you know that myself and my sister, Sarah Williams, have recently become running geeks. This May, we'll be running the Tinkerbell Half Marathon in Disneyland...but we won't be slugging through those 13.1 miles for nothing!

As we go, we've decided to run for a cause and fundraise for Alex's Lemonade Stand Foundation, an amazing charity that raises money to support childhood cancer research. This is a disease that's all too common, and especially as I've started teaching, I understand better than ever the deep impact young people can have on the world around them--as loving and sometimes goofy siblings, friends, sons or daughters, and as our world's hope for the future.

If you would be willing to donate, we would both be incredibly grateful--so grateful that if you donate, either Sarah or I will post an old picture or memory on your social media, or commit some embarrassing act of your choice. Thank you for your support!