There’s this thing that happens when your friends know you “do fitness stuff”. It’s akin to the Pickup Truck Call, in that you’re top-of-mind when it comes to moving things, especially large, awkward, or heavy things. This is expected and, usually, fairly entertaining, because there’s usually food and stuff as thanks, plus… hey, free bonus exercise. :-)
There’s also the inevitable wallpapering of stuff that captures social media mindshare, which Oatmeal’s treatise on running did when he posted it recently.