Its optional. I mean its not that wearing them would change anything as far as your health is concerned. But yes wearing ear covers might to some extent make you feel better and you would fall asleep faster compared to the normal tie you take generally. Other than that there are some benefits Like the benefit would be, these covers would make you have a sound sleep as other sounds won't fall on your ears. Other than that during winters it becomes helpful, as wearing ear covers protects your body from the cold and also helps keep your boy warm to some extent.