I have started to swaddle my DS who will be 11 weeks tomorrow. A couple of people have told me it isn't safe. One said it puts them at risk of SIDS and another said that they need to be able to move their arms as that is how they keep themselves warm. I was surprised as he was swaddled by the midwifes in the hospital. Anyone know if these things are true? He certainly seems to sleep better when I do it.