Hugging is not just a friendly or romantic gesture, it also has a lot of health benefits. According to science, hugging someone, especially you like, reduce stress in one's body and mind.
When the stress in a person decreases, it will reduce the anxiety and help the person have a good night sleep.
A study published in the journal Psychological Science revealed that hugging someone will increase the happiness hormone serotonin which is also the body's natural anti-depressant. Romantic hug will lead to an increase in the oxytocin level in the person's body.
When the nervous system is relaxed then it will help in boosting the body's immune system.