WARNING: Excessive smiling may result in major cases on minor mania; heart palpitations, or a rare case of palpitating palpitations of the heart; inexplicable bouts of laughter; convulsions of the chest due to aforementioned inexplicable bouts of laughter; loss of breath due to aforementioned convulsions of the chest due to inexplicable bouts of laughter; loss of hunger; loss of libido; loss of vocal cords; loss of possessions due to somepony who doesn’t smile; loss of life due to somepony who doesn’t smile; loss of thoughts; loss of thoughts about thinking; loss of attention to surroundings; loss of any care in the world; loss of virginity; loss of the loss of virginity, or a curious penchant for repetition.

If any of these side effects surface, keep smiling. Everything will be just fine.