A nurse is providing teaching to an older adult client about methods to promote nighttime sleep. Which of the following instructions should the nurse include?

A. A light snack before bedtime, such as one containing tryptophan, can help promote sleep. B. A 1-hour nap during the day could disrupt nighttime sleep patterns and should be avoided, especially in the late afternoon or evening. C. Performing exercises prior to bedtime could be stimulating and might interfere with the ability to fall asleep. D. Staying in bed for an hour if unable to fall asleep can reinforce frustration and poor sleep patterns. Instead, the client should get up and engage in a relaxing activity before trying to sleep again.