You feel fun because of the release of certain chemicals in your brain, such as dopamine, which is associated with pleasure and reward. When you engage in activities that you enjoy, your brain releases dopamine and other neurochemicals, leading to feelings of pleasure and satisfaction. Additionally, engaging in fun activities can stimulate the release of endorphins, which are natural pain relievers and mood elevators.

Fun activities also stimulate other parts of your brain associated with emotions, such as the limbic system. When you have fun, you are likely to experience positive emotions such as joy, laughter, and excitement, which can help you feel better overall.

Moreover, having fun often involves socializing and making connections with others, which can lead to feelings of belonging and security. When you engage in fun activities with others, you are likely to bond and create positive memories, which can further enhance your sense of well-being and happiness.