The "Internet of Things" basically now includes all the things: internet-connected slow cookers, tea kettles, baby onesies. And don't you think that also includes athletic equipment? Bowflex, the company best known for its all-in-one home-exercise machines, is showing off a pair of "smart dumbbells," which log your weight lifting sessions, and also use sensors to detect if you're moving your arms too fast (bad form, dudes). The SmartTech 560 dumbbells, as they're called, then send that data to an Android or iOS app over Bluetooth. Even then, there's a display on the weights, so you can glance at some of this info right there. Once you're in the app, you can view 70-plus video tutorials, courtesy of MyFitnessPal, as well as participate in a six-week training challenge.