The best...body monitors

StressEraser

“If you feel stressed and scattered,” this is the product for you. When you place a finger on its infrared sensor, it measures your heart rate, then guides you through a calming breathing exercise.

$179, stresseraser.com

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Source: WholeLiving.com

Withings Blood Pressure Monitor

“Meet your new cardiologist.” Plug this cuff into an iPhone and it will give you a precise reading and automatically store the data in a file that can be instantly shared with your doctor.

$129, withings.com

Source: Playboy

Zeo Sleep

Manager Mobile

Before bed, strap on the headband above and it’ll gauge your rest through brain signals. You used to need a bedside base station to read the results; this new Zeo connects to your iPhone or Android.

$99, myzeo.com

Source: CNET.com

Gruve

This activity monitor tracks body movements, “including very small ones,” so even fidgeting will count toward your exercise goals. Clip it on your waistband: It vibrates when you need a reminder that you’re not moving enough.

$180, muveinc.com

Source: More

Philips DirectLife

This activity monitor “offers one major advantage over its competitors”—a live coach. Wear it daily and its lights signal progress toward your preset calorie-burning goals. Plug it into a computer and a mentor will e-mail tips.

$149, philips.com

Source: More