Hello, there is nothing to pay attention to this. It is warmer in the room. You can take off your coat and cover it with a thin quilt If it is not particularly warm indoors, a thicker nap cover is recommended. It is more comfortable for children to take off their coats. Babies wear cotton-padded clothes in winter, which is more restrained. It will be more comfortable to fall asleep at noon. But be sure to cover the quilt to avoid catching a cold.