I run a 24-hour day care. We keep the overnight kids awake so their schedule matches their parents'.

Amanda Yochum manages overnight childcare centers where kids play, learn, and thrive while their parents work night shifts.
What to Expect on MSN

Why Is My Toddler Waking Up at Night?

If your former sleep-like-a-log toddler has started waking up and crying again, there might be a good developmental reason for it.