Hiring a personal trainer, diet coach, and sleep guru (is there such a thing? If so, I wanna be one) to hover over you at all times, dispensing advice and giving you updates, sounds pricey and kind of annoying. But having an ergonomic wristband do all their duties for you? Now that could work. Larklife ($150) syncs with  iOS devices to track your workouts, sleeping patterns, and eating habits. It also aims to improve your life through recommendations, like letting you know if you’ve been sitting too long and suggesting a walk, or encouraging you to call a friend at the end of the day. And hey, if you make friends with a sleep guru, give him my number. I’d like to some tips on how to get started.