I truly think you need to stop the physical sports that is causing any form of damage to your brain...And yes, I mean, "Damage." I believe your causing Neuro-connections damages to your brain when your head gets hit hard. Your remember Mohammad Ali, right? Well, take a look at his condition before he died, from his head getting hit from boxing. His condition was caused by the direct hits his head sustained from other boxers when he fought. And his head was hit on the both sides, the forehead (frontal-lobe), etc thru boxing hits....Well, find some sort of online video showing him talking on TV and you can see his brain acquired alot of damage. Remember, in those days not much was known about TBI. What we know now is Fact.....I have TBI since 2008 from an ATV Cycle accident. I have Severe TBI due to the fact I was in a deep coma for 3 months in Sept 2008 from my accident. I almost died many times while in coma...and I also had 2-3 strokes while in my coma. Find something else to do...sports wise....the hard hitting on your head is causing neuro-damage of many types throughout many parts of your brain...think about it...the brain sits inside our skull like slightly-hardened jello....it shakes and rattles inside our skulls when you get hit hard....Put something inside a jar and shake it back and forth....Basically, our brain does the same thing...sort of.....The problem is, our brain gray matter contains approximately 1 billion cells which are extremely damaging due to injury. Believe me, unless you want to end up sort of like Ali, do something else in sports..okay? It's your call....Your choice....Do the right thing..I'm sure your parents would be happy you do! Good luck!