I know you've already abandoned your New Year's resolution of going to the gym three times a week, but that doesn't mean you should give up entirely on getting healthy in 2014. So put down the fifth slice of pizza and instead check out the teeny tiny Fitbit One ($100). This wireless activity and sleep tracker not only tracks your steps and calories burned, but also can be used to monitor your sleep habits. The device can be synced wirelessly to your computer or via Bluetooth to your smartphone and even displays short motivational sayings to keep your spirits up. So even if you skip the gym for a day, the Fitbit may be just the thing to encourage you to do a few laps around the house next time you're scarfing down that slice of pizza.