<s>[INST] Usually my brother is a light sleeper. I tried waking him up today he was breathing and moving but wouldn't wake up after trying to wake him up for about 10 min he finally woke up and said he was confused. Then he didn't remember talking on the phone with my mom . What can this be ? [/INST] Hello!Welcome on HCM!Your brother's symptoms seem to be related to confusion. Sleepiness can cause these memory troubles and difficulty in concentration, because it is a situation of low alertness. So, there is nothing to worry about. If the problem persists, I would recommend consulting with his GP for a physical check up. Kind regards, Dr. Aida </s>