1. Deep-sea fish People living by the sea are generally happier, not only because the sea is refreshing, but also because they fish as a staple food. A Harvard University research report points out that the Omega-3 fatty acids in fish oil have similar effects to common antidepressants such as lithium carbonate, causing our bodies to secrete more serotonin, which brings happy emotions.
2. Bananas The tender yellow bananas are not only delicious but also contain a substance called an alkaloid. Alkaloids can boost spirits and increase confidence. Moreover, bananas are a super source of tryptophan and vitamin B6, both of which help our brains produce serotonin.
3. Grapefruit The delicious, juicy grapefruit has a light bitterness and a unique aroma, making it a novel and refreshing experience to eat or smell. Most importantly, the high amount of vitamin C in grapefruit not only enhances the body's resistance but is also a key component in producing dopamine and norepinephrine, which are pleasure factors for our bodies.