4 Gadgets that Can Improve Your Health
Ask yourself, "What do I most want to improve?" Then seek a tool to help you do it.
Digifit Connect 2
The Digifit Connect 2, a transceiver you stick into your Apple device, collects data from a suite of wireless sensors—including ones for your bike and sneakers—so you can adjust your exertion level to reach your fitness goal.

$50 for the device, $10 for the app; DigiFit.com