### Instruction: Why do toddlers wake up so early?
### Response: A toddlers sleep patterns are a product of how they are trained as a sleeper from early on in life. Toddlers who were removed from a crib regularly in their early months tend to be inconsistent sleepers into the toddler years. The brain development in a toddlers brain is so malleable, they rely heavily on their inherent circadian rhythms to wake and fall asleep.