the sound that make me sleep

Remember the time when you were young and during a hot afternoon and it just make you sleepy? And remember the breeze of wind from the fan and the sound of the blade made by the fan make you feel even more sleepy? Well I have that in this summer as I bought a table fan and so far it really remind me of those time when I was a kid when AC are not available. I just like the sound from the fan and not sure why it can sleep just with the fan turn on during summer.  :) I hope the fan last long enough for me to use it until I depart from here..