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
What happens when you start recording every little detail of your health? Does all that data help you improve your habits, or just drive you nuts?
From simple shifts to audacious rituals, we present 30 ways to upgrade your life.
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Make one of these changes every day, and before the month is up you'll feel like a whole new you.