A concussion is a brain injury caused by a blow to the head or a violent shaking of the head or body.
There are many symptoms of a concussion but common symptoms include headaches, confusion, lack of coordination, memory loss, dizziness, excessive fatigue, etc.
C. Rep, A consecutive repetition exercise that tests and measures your resistance/endurance. Hope this helps!
Herpes, HIV and HPV all don't have cures
I believe it is psychodynamic but if I am wrong that is on me.