Babies are prone to move their hands and feet when they sleep, and always like to put their hands outside or kick the quilt, which makes them susceptible to catching cold in winter, so they can sleep in an air-conditioned room, which is less likely to catch cold even if the baby’s hands are placed outside. Air conditioning room temperature set to 24-26 degrees Celsius is more appropriate. If it is too high, the temperature difference between inside and outside will be big, and the baby will easily get cold if he/she goes out of the air-conditioned room. Another thing is to use a sleeping bag for your baby, because a sleeping bag can better protect your baby’s body from getting cold. Even if the baby’s hands and feet are moving around, it’s not easy for the baby to stick his hands out of the sleeping bag. This will reduce the chance of getting cold. So if your baby’s hands are always outside, one way is to raise the room temperature and another way is to use a sleeping bag, which will reduce the chances of your baby getting cold.