When it comes to Waist Trainer time, we recommend a maximum of 8 hours per day. Take it slow if you're new to this waist shaping adventure. Our customers say it's more comfortable during the day with the Waist Trainer . Nighttime wear is not common (sleep needs space), but hey, do what feels right for you! Just remember to stay within your daily wear time, and you'll shine like a superstar. Keep shining, beautiful person!