Please choose the correct ending to complete the given sentence: Youth: [header] How to sleep longer (for kids and teens ) [title] Set a cool room temperature. [step] When you fall asleep, your body temperature naturally cools. In order to facilitate this process and help you fall asleep, keep your room at a relatively cool temperature.

Ending1: Your optimum temperature range is between 36 and 82 degrees fahrenheit (15. 2 and 24.4 degrees celsius). Ending2: Your bedroom should be at least 80 degrees fahrenheit. Any cooler and you'll get a ton of heat during the night. Ending3: For example, your room temperature should be between 60 and 67 degrees fahrenheit (15-20 degrees celsius), while sleeping. If your parents won't change the temperature of the entire house, you may want to use a fan in your room. Ending4: Choose a cool location near a window, or at a comfortable temperature within your home. Wait until your children are almost asleep to perform the maneuver.

Answer format: ending1/ending2/ending3/ending4