Mine are 4.5 y/o (twin boys) and they still get up repeatedly at night. They start out in their own beds and migrate to sleeping bags on my bedroom floor. Sleeping with twin 4.5 year old boys is an exercise in physical brutality; I don't recommend it. I'm also on the fence now about bed-sharing because, at almost five years since their birth I am now so sleep deprived that my thyroid has begun to disfunction and my body has stopped producing enough vitamin D and I'm...