quick way to undo when you press the "Start" button. I think the three gestures of setting time, pulling up the menu and pressing start are very close and I often tend to press the wrong button. Currently there doesn't seem to be a quick and easy way to "undo" if you trigger the "start" button.
I have accidentally touched "Start" many times before, and it really annoys me having to go through so much to get off it again. Good idea, I hope this changes!
Also what if you want to change the sleep aide but have already started. Additionally you star, then have to get up for something.