You can usually recognize when a person is happy just by looking at the expression on their face. This is because happiness is

often accompanied by a genuine smile, bright eyes, and an overall positive energy that radiates from the person. Additionally, happy individuals may appear more relaxed, upbeat, and engaged in their surroundings. Their body language may also be open and welcoming, further indicating their joy and contentment. Overall, happiness is a powerful emotion that is easily visible in a person's demeanor and facial expressions.