We’re springing into summer, and into perfect weather for outdoor activities—we’re already there in Malibu. I’ve been catching some rays (and vitamin D as a result) while hiking, paddle boarding, cycling, and playing Ultimate Frisbee. The key word in that last sentence is “playing”—it’s central to how I stay in shape and enjoy life. But it wasn’t always this way.

(This Mark's Daily Apple article was written by Mark Sisson, and is narrated by Brock Armstrong)