Make sure you soak in cold water. If you put it in warm or hot water, you could grow bacteria in the food. Same goes for microwaving.
Answer:
Many adults in their early twenties do choose to get married. However, in the world today it is more common for young adults to live as if married without actually taking the vows. So, your answer is legally recognized domestic union relationships that don't involve marriage. This is called Con-habitation.
A few things can include taking a hot shower before bed, make sure you've completed everything you needed to do for the day, and go to bed on the right time, a bad habit would probably be staying up late to watch a movie or something
The use of extreme cold in surgery and other medical treatments