Baby swings are safe for short periods of time. The American Academy of Pediatrics recommends that babies spend no more than an hour in any single place. This includes car seats, strollers, bathtubs, and swings. While most manufacturers recommend that babies spend no more than 30 minutes in their swing at one time, some infants may require longer periods of activity stimulation before they can sleep or attend to other activities like eating or playing on the floor or mat with toys or books.