Yellow is the warmest and expandable color. It is also the symbol of youth, the color of gods. This color stimulates the central nervous system, increases the digestive capacity, and it makes us feel in shape.
So, painting your walls in yellow or buying yellow room décor it is a good choice for you. Not only that it looks incredible, but it will also make you feel physically and mentally.
If you want to hear the symbolism of other colors and you need some help deciding which one is better for your room, please let me know and I will make a post about the color you need.