Hmmm, must be one of the apps. I have many uploaded. 69, just counted. How apps you have on your AW? I'm only counting the apps that get uploaded to AW, not counting the apps that came with OS3
In 5 Days I had mine reboot once. It was when I lifted my wrist, maybe viewing the Activity App. But at the time I just recently repaired the the watch to the iphone.
During the first week I had my Apple Watch, it crashed everyday. Then I got rid of some apps and it never happened again. So yes, it sounds like an app is causing the problem.
By the way, 69 is CRAZY I have 10 apps installed on my Watch.
I just had my 2nd crash. I had dock open waiting to hit the outdoor walk, forgot something upstairs came back down pressed dock side button again, boom Apple Logo. Had to wait a minute for it to restart so I could hit that button.