Smile is a facial expression comprised by flexing the muscles of both ends of one's mouth, often showing the front teeth, without vocalisation, and in humans is a common involuntary or voluntary expression of happiness, pleasure, amusement or anxiety.
Research has shown that when one smiles less muscles are used up, but when one frowns the reverse is the case, that means more muscles are needed to frown.
So anyone that does more of frowning, tends to get more muscle contraction which will lead to the individual ageing so quickly.
Wrinkles will pop up, he or she will never be seen as beautiful or handsome in anyone's eye because of every day frowning.
But the person who keeps a smiling face always will always look attractive, beautiful or handsome as the case maybe and will not age fast.
Beloved I'm aware of the fact that the case of life as made some people prefer frowning over smiling.
No matter what life has presented to you it is not enough to frown, no matter how you frown or think it won't change anything, it wouldn't add to your height- Matthew 6:27
27.Which of you by taking thought can add one cubit unto his stature?
Be cheerful in all situations weather good or bad.
God has a way of bringing you out.
That trouble that has caused the frown on your face will pass away.
The Bible says in 1st Corinthians 10:13
13.There hath no temptation taken you but such as is common to man: but God is faithful, who will not suffer you to be tempted above that ye are able; but will with the temptation also make a way to escape, that ye may be able to bear it.
So my brethren that trouble us not enough to steal your happiness or your smile, stand up, dust your self and move ahead.
Shalom.
God loves you.