Today I learned that sleeping twice per night was once normal and, in fact, is natural and beneficial. That is, people used to go to sleep when the sun set, wake up sometime after midnight for a while, and then have a second sleep until the sun rose. (Learn more here.)
Today I meditated for 20 minutes.
Today I acted kindly by leaving anonymous, friendly notes on the windshields of random cars. Click on the picture below to see examples.