The Best Health and Fitness Gifts of 2014

The Fitbit Charge ($130) is similar to the Fitbit Flex but with a larger display and caller ID info from your nearby smartphone. Like other Fitbits, it tracks your activity (steps, distance, and calories) and sleep patterns.

Fitbit also just announced two other devices: the ChargeHR ($150), which is like the Charge, but with heart-rate-monitoring capabilities, and the Surge ($250), a smartwatch and tracker in one. You can preorder both now for availability in early 2015, or keep your eyes peeled the next time you're holiday shopping; Charge HR or Surge units will be available in limited quantities at select retailers.