The Jawbone Up24 ($149) is a fitness-tracking wristband with a bit of a ‘tude. Wearing one and using its new wireless syncing feature (using low-energy Bluetooth) will get you plenty of real-time data about your road to anti-chubbiness, with a healthy dash of sass along the way. The Up app will suggest you get to bed earlier or walk more steps throughout the day with plenty of “Today I Will” messages on your phone. If you’re the type that needs a little push to get going, this could work out nicely for you. If you deeply resent all types of authority figures — even ones with artificial intelligence — then definitely invest in a sturdy phone case.