As someone who spends a lot of time working on the computer, I sometimes worry that I’m staying idle too long. If you also worry about your fitness, the Jawbone Up looks like a fun and relatively easy way to keep an eye on it.

You slap it on your wrist and it keeps track of the exercise you’re getting, the amount and quality of your sleep, and can also give you vibration reminders to get up and stretch your legs once in a while. If you tell it when you need to wake up by in the morning, it can even wake you up at an optimal time in your sleep cycle.

Though this idea sounds Just Plain Awesome, here are some questions I still have about the device:

• How accurate is it really? I’d like to see a 3rd-party study.
• Is it really worth $100? That’s a lot of cash.
• Is the hardware reliable yet, or should I wait for the next model? I’ve read quite a few stories of it failing after a single week of use.
• Can the nutrition tracking just be turned off? I’ve heard that function isn’t as seamless and frankly, I know when I’m eating like crap.

For more info on the Jawbone Up, check out the video review below: