Suddenly it's the must-have item... a little electronic gizmo you wear around your wrist, and it tracks your "activity." (Or, have they been around for years, and I've just not been paying attention? I've seen 'em for six months or so, and now I'm seeing 'em for Mother's Day, Grads, Father's Day, etc. Makes you wonder how civilization went on for 5000 years or so, without activity trackers!)
They keep track of your steps, distance moved, quality of sleep (wow!), and then you download it to your smart-phone or computer, and can make charts and graphs!
Wouldn't it be a bummer if you bought an activity tracker and a month later it told you the most "activity" you engaged in was putting your activity tracker on, and pushing buttons on your smart-phone to make it work?!! (nudge-nudge, wink-wink)