CTE is a neuro-degenerative condition that is caused by repeated head impacts. Researchers found that even sub-concussive blows (i.e., the hits that an offensive/defensive lineman would incur on every play) can cause CTE even though the impacts don’t meet the criteria of a diagnosable concussion.[1] For those who did sustain a concussion, it has been shown that sustaining a second concussion before fully healing from a prior concussion significantly increases the risk of a protracted recovery time and more severe cognitive, physical, and emotional symptoms.