I discovered for myself that sleep pattern is one of the main signs that tells me to consider seeking a T. I am glad that I have learned this because I had trouble sleeping and a lot of crying for two weeks which got me to go see a T. If I hadn't have gone to see a T then my grandma's death would have knocked me off my feet. So, if there is any doubt. Please take good care of your sleep time. I have also mentioned to my T that I have been particular about my sleep for the past decade because of this pattern of mine. I am glad to see that scientists also know about this pattern.