I still have the itch to build, so I'm working on something that's been on my mind for a while. Some background: I wake up at 4am every morning for work. Because of the early hours, I don't get as much sleep as I'd like, so I usually take a mid-day power nap to recharge. I'm strict about keeping these under 30 minutes — I hate the groggy feeling of waking up from deep sleep. Turns out there's real science behind the 20-minute number. The problem is, if I set my timer for 20 minutes but don't fall asleep for the first five, I'm stuck either waking up after only 15 minutes of actual sleep or fiddling with the timer to reset it. It's a small annoyance but it's constant. What I've always wanted is a simple Apple Watch app that starts the timer only once it detects I've fallen asleep. That way I get the full 20 minutes every time, no guessing. So I'm gonna build it.