Red, it excites our senses and activates blood circulation

Our body is affected in different ways by different light wavelengths. Red light has the longest wavelength and the slowest vibratory rate. Red light has been shown to stimulate the heart and thus blood circulation. It also fortifies the body and helps build up red blood cells.
Colour influences our emotions and psychological state too. Red is a very powerful colour, associated with a high level of energy and stimulation. It goes hand in hand with adjectives such as courageous, antidepressant, assertive, determined, friendly, warm, and sensual. On the other hand, too much of some reds can make people feel irritable, impatient and even angry. Try to use somewhat subdued shades of red, like terra-cotta, or, if you wish to use bright red, assess how much you can use to make it a profitable addition to your environment without getting overwhelmed.
People who like to wear red tend to be ambitious, impulsive, excitable, and energetic. They tend to be high achievers, courageous and extroverted, which can make them good leaders.
Because of its stimulating effect, red is well suited to rooms where movement and activity are high, like the hall, staircase, exercise room or kitchen. But remember, you don't need to paint all the walls red to get the beneficial effects of this colour, if you are not sure how much impact it will have, try it as an intermediate or accent colour first.
Red is often considered "the colour of colours". In some languages, the words "red" and "coloured" are synonyms; in other languages, "red" and "beautiful" are synonyms.
Red excites our senses and activates blood circulation. It is the colour of passionate love, sensuality and desire.
Red is joyful. Many children-oriented products are red: balls, toys, garments, as well as other products that trigger pleasure like fruit jam, candies, etc. Christmas decorations are red too.
Red evokes exuberance, speed and action. It is no coincidence that so many sports cars are red.
Red and orange are the hues that are easiest to perceive from a distance. This is one of the reasons they are used to warn against dangers. They are also the colours of prohibition. Stop signs and traffic lights are red. Warnings on medication packages are printed in red.
Red attracts our attention: we use it to mark students' homework and exams or to show that a certain product is sold at a reduced price.
Red, the colour of blood, identifies first aid services such as the Red Cross. Also, until the 19th century, red was used in many of Europe's military uniforms.
Red conveys anger and aggressiveness, such as in "to see red", and "red with anger". It also conveys other emotions such as in "red with embarrassment", "red with shame", or "he went red".