I find that, when I don't switch on the air-con, my baby sleeps very deeply. Even when I wake him up to feed, he doesn't want to. When I switch on the air-con, my baby 瞓落床都好快会醒返. Maybe it was a lot warmer in my womb, so that he feel the environment so unfamiliar. Then I wrap him tighter in a blanket, with his arms inside and adjust the air-con to 26 degrees. He seems to sleep better and longer.