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. Eat a light snack before bedtime: Consuming a small, easily digestible snack, such as a piece of fruit or a glass of milk, can help prevent hunger-related awakenings and promote relaxation, supporting better sleep in older adults. B. Take a 1-hr nap during the day: Long daytime naps can disrupt the sleep-wake cycle and contribute to difficulty falling asleep at night. Short naps (20–30 minutes) earlier in the day are preferable for older adults. C. Stay in bed at least 1 hr if unable to fall asleep: Remaining in bed when unable to sleep can reinforce negative associations between the bed and wakefulness, potentially worsening insomnia. Clients should get out of bed and engage in a quiet activity until sleepy. D. Perform exercises prior to bedtime: Vigorous exercise close to bedtime can increase arousal, heart rate, and body temperature, making it harder to fall asleep. Exercise is best scheduled earlier in the day to promote nighttime sleep.