The problem with alarm clock for everyone is that they have gotten use to it that we can off the first alarm (and snooze) and off any second alarm in my sleep, literally.
There are a few suggestion on lifehacker which are quite interesting such as:
- wrapping the alarm clock with a t-shit and placing it in a different orientation and location
- having multiple alarm clock which are totally different (i.e. mobile phone and a classic type) and place them at different location
I have been placing my alarm clock in a different room for 2 months now, and eventually you can sleep walk. That’s my take 🙂