Question: can twins sleep at the same time?

Hayley Moulding answered on 16 Mar 2016:

Phenomenal question. It is such an interesting question to ask! Yes they can, but that could be by coincidence! It would be amazingly interesting to see whether they have similar sleeping patterns and times they fall asleep and wake up. We could do a study to find out whether there are differences, and if there are differences in identical twins, or non-identical twins. I reckon identical twins might have similar preferences of sleep – like they both go to bed early, or both wake up late. Would be fascinating to find out! Thank you for giving me ideas!