No concept of time. I'll sit down and feel a bit hungry, but not enough to eat yet, so I'll tell myself "oh I'll eat in an hour". Then I'll blink and it's been at least four hours and I didn't notice getting so hungry I'll end up overeating.

Basic silicone case, no screen protector, no damage. Have dropped it enough times over the 9 months I've owned it that I'm rather impressed by the complete lack of damage.