not at all. you can sleep with a head covering and socks and it will not harm your brain or memory. whoever told you this is full of beans! in the distant past many people wore "sleeping caps" to bed. about 15% of our body surface is the head so keeping the head warm will help warm the rest of your body (including those cold feet of yours).
does sleep while wearing socks & covering head is ok? . i've heard that it harms the brain & memory? is it true?