Any doctors out there who have tried sleep/activity/etc. tracking devices and services (e.g., jawbone's up, fitbit, nike+ fuelband)? thoughts?

Imore & fitbit: I-more is a device by mediconsult monitors heart rate variability to reset body($4000). Fitbit is $99 which tracks daily calorie expenditure - the first one is wellness helps to reset body the second is for information need action on our end.

I use fitbit: I've been using Fitbit daily for over 2 years. During the day it shows my activity patterns, and allows me to use that feedback to modify the behavior. For example if I have not met my step goal by dinner time a postrprandial walk becomes more attractive. At night, the Fitbit can provide useful information regarding quality of sleep. The web software allows for tracking of calorie intake andweight.