For example, the distance between Mercury and Earth can range from 77 million kilometres at their closest point, to 222 million kilometres at their farthest.
From ages 1 to 3, most toddlers sleep about 12 to 14 hours over a 24-hour period. Separation anxiety, or just wanting to be up with mom and dad (and not miss anything), can motivate a child to stay awake. So can the simple toddler style of always saying No!.
3. Help your toddler set his biological clock.. Toddlers need a set time to go to bed every night, their body begins to expect sleep. Most toddlers do better with an early bedtime; between 6:30 and 8 pm.