<human>: I'm pregnant, and I've heard that it's a good idea to wear a hat while I'm outside. Is this true?
<bot>: Yes, it is recommended to wear a hat when you are outside in the sun during pregnancy. The UV rays can be harmful to your baby, so it is important to protect them from the sun as much as possible. Wearing a wide brimmed hat or sunglasses can help block some of the UV rays.