You will likely need to stay in the hospital if: Emergency or more severe symptoms of head injury are present; Skull fracture; There is any bleeding under your skull or in the brain. Outlook (Prognosis). Healing or recovering from a concussion takes time. ...
Scientists concluded that the average human body contains approximately 37.2 trillion cells! Of course, your body will have more or fewer cells than that total, depending upon how your size compares to the average human being, but that's a good starting point for estimating the number of cells in your own body.
Going back over the last two centuries, the estimates for the number of cells in the human body have been in the trillions. How many trillions? Anywhere between five trillion, and 200 million trillion! An estimate that has a range between 200 million down to just five is perhaps a little too loose to be of any use.