How did Bill Dougherty of Stone Harbor celebrate his 90th birthday this year? He did 1,000 crunches. That’s right, 1,000 crunches. Philly.com reports that Dougherty did 1,000 stomach crunches to celebrate his 90th birthday. Dougherty has been playing tennis for 80 years. On Wednesday, Dougherty and his wife leave for Florida for winter break.