If you say to someone, "Guess what I did today?" do you really want them to guess?
After I did my first 3-mile walk, I went upstairs and said to my husband, "Guess what I did!" and he said "You just did 3 miles!" Takes the fun out of telling him, somehow. Like, he already knows, so it's not fun, surprising news anymore.
Anyway, guess what? I know, you already know. I did 3 miles today! My legs were burning in the middle but it eased off and I made it through. Hurray! The middle mile was pretty intense.