When you put a hot boiled egg in a cup of cold water, the temperature of the water and the egg will rise. As heat transfers from the hot boiled egg to the cold water, the egg will gradually cool as the water becomes warmer. The result is a mixture of warmed eggs and water. Eggs are known for their many health benefits and are a great source of protein and other nutrients. Eating hard-boiled eggs can reduce oxidative stress, help restore gut balance, have anti-inflammatory activity, reduce blood pressure activity, and more.