Eating cold food is not only bad for you but maybe good for example raw vegetables are more nutritious than cooked since some nutrients are lost in the cooking process.
Other digestive systems are extremely sensitive to foods and liquids and most importantly the temperature of the foods. When we eat ice-cold foods and smoothies our body freezes up, creating a blockage, preventing our tissues from absorbing the nutrients that are being given to us.
Women most importantly should not eat cold food because they greatly increase the chances of hormonal imbalance, skin irritations, bloating, digestive sensitivity, blood stagnation, hair-loss and mood disorders and increased anxiety. Unless the food is so cold that it will physically damage tissue.
Food fresh from a refrigerator is perfectly fine to eat. However, most people have their reasons for why they like to drink their water warm or cold.
Generally, most people drink cold water because is refreshing and cools the body. Nutritionally cold water is absorbed more quickly than warm water and therefore decreasing risk of dehydration.
Foods like the cereals have nutritional benefits, often cold cereals are coated with sugar. Some foods cold foods make the body warmer, when the body starts to digest you feel warm because your body provides energy to digest that cold food product.