14. Staying Up Late
Sometimes, staying up late is inevitable (like throughout your college career or during the early days of child rearing). Making a habit out of getting less than five hours of sleep a day not only physically ages you by giving you dark under-eye circles and preventing your skin from rejuvenating, but it has been linked to premature death–according to Dr. Casciari, an expert in sleep. Doctors suggest getting seven hours of sleep a night, but it’s important to listen to your body (it knows best). Getting sound sleep is also important, so try to leave your phone on a table and not near your bed.