If youâre a heavy sleeper, and no alarm clock is good enough to wake you up in the morning, then you definitely need this one for sure. The worldâs biggest alarm clock! It is computer controlled and powered by an air compressor. A large air cylinder is attached to the bed, and when its time to wake up, the pressure shakes it so hard that it would even bring a dead back to life. Really, itâs that effective. Well, it can even come handy while â¦hmm!