Soaking the oats in cold water or milk over night helps your body to get some of the valuable ingredients. It's probably a good idea to put them in the fridge overnight so the milk doesn't go bad. But it's no problem to heat the soaked oats in the microwave in the morning if you prefer them hot.

If you forgot to soak the oats over night, you can also let them soak in hot water for 30 minutes for a similar effect.

Or you can just eat them unsoaked. They might be a bit less healthy, but after all, they're still a healthy food.