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Quick Fact –

After breast cancer, physical activity can improve sleep.

Rogers, L et al physical activity and sleep quality and breast cancer survivors: A randomized trial. Medicine and science sports and exercise. 2017: 2009–2015

This report of a 35-year-old man who had a severe traumatic brain injury and had been in coma, found that stimulation of the brain by stimulating the vagus nerve could bring him to a state of awareness.
While removed from a state of unresponsiveness to an ability to follow objects with his eyes, and turn his head when asked, he demonstrated no ability to communicate to the medical staff, or care for himself.
This story is an intriguing display of the ability to use new techniques to improve the function of the brain. However, as one who cares for those with such injuries, I felt an immediate concern for the patient and the family. In cases where I have assisted in advancing patients to a level of awareness, without the ability to interact with the environment, I have wondered whether the quality of life was in fact harmed.
These have been among my more troubling moments as a doctor.
We will have to wait and see whether such advances can be refined to allow patient to move beyond constant medical care and rejoin their families.

https://www.scientificamerican.com/article/brain-stimulation-partly-awakens-patient-after-15-years-in-vegetative-state/?wt.mc=SA_Facebook-Share

What first occurred to me is that Aaron Hernandez was genetically vulnerable.
What that means is while he seemed far too young to have brain damage this advanced, the reality is that some people are simply at greater risk.
It’s a sad reality that this vulnerability wasn’t understood until autopsy.As we study further, we hope to be able to identify those like Aaron, before it’s too late

https://www.nytimes.com/2017/09/21/sports/aaron-hernandez-cte-brain.html