Been using my UP for a month now and found it extremely helpful for behavioral change. Reminds me when I am too long behind my desk, keeps me honest re: how much I move during the day and how much sleep I manage to get every night.

I bought my UP almost a year ago, not a fan. They recently introduced the UP 24, which synchronizes automatically with your phone. Much better I guess. Plugging your UP in and out via the connecter is really annoying. Personally my UP makes me feel DOWN.