Why Hug Day Wallpapers – Best Cure Romantic Hugable Images ? Facts??? ‘Hug Day’ to be speaking scientifically, research states that hugging for up to twenty seconds releases a hormone in the body called oxytocin. And this hormone is the one responsible for making a person feel good and happy. So that’s the significance of a hug in science. And it is understood why a hug makes you feel good. It can lift your spirits and make you feel better when you’re not feeling all that happy.