You met Jack last winter when he was shoveling snow. Jack had his 80th birthday a few days ago. He does yard work nearly every day. Now is the season for Jack to mow the lawn and pull weeds. (At the same time.)
When Jack saw me taking his picture, he went inside to change his clothes. Jack wanted to have his picture taken in a Northwestern cap and shirt. Two of Jack's granddaughters are lacrosse stars at the national level. The older one played on the Northwestern lacrosse team that won college's national championships four years in a row, and the younger one plays on the current team that won the national women's lacrosse championship last weekend.

After I wrote this post, I went back outside. Jack was back in his work clothes, balancing a huge ladder against a tree and trimming the lower branches.
After dinner, Jack decided he needed more exercise, so he climbed on his bicycle and went out for a five mile ride.
And you think YOU are active and fit!