Children often have cold feet during winter, sometimes even freezing throughout the night. This could be related to heart weakness, anemia, or poor peripheral circulation. It’s recommended to wear warm clothing, avoid cold and cool foods, drink plenty of hot red sugar water, and consume goji berries to alleviate the cold feet. Additionally, eating some goji berries daily may also be helpful. If the problem persists, it’s advisable to consult a doctor for professional advice.