Sparring My Brother..

So my brother & I are both boxing n MMA fans, n he wants too Fight at some point. We have limited options for training where we live, so we throw on the gloves a cpl times a week n spar in the driveway. General rule is 20% power on headshots and 80% on bodyshots. He is 19 , 6'4 , 240lbs and I'm 32 yo, 6'1 , and 210lbs so I always stress control as I'm an Unc now n don't want anymore CTE than I probably already have after having a cpl Bangs on the head over the years. Anyway, we were sparring it was the last round, n he hit me with a cpl counter body shots that were spicy. So I marauded forward throwing hooks like a spastic trying too getbit back, n one of my arms hyper extended on his guard and now I can't do any exercise with my right bc tendon pain, n have a lil numbness in my right hand. Shout out my brother though even though he fight like Shakur Stevenson n piss me off somtimes, love that guy. Be careful folks n don't throw hooks with straight arms 😅