Pulled Muscle or what?!

I'm 17 6"1 195 Lbs and i box!. Today when i was working out on my punching bag, i did a right uppercut using me full strength and it felt like i pulled a muscle from my left trapezius that traveled up my neck to the back of my head!. it was a burning pain in the back of my head that last a couple minutes!. I'm just curious what caused this and what it is!.Www@Answer-Health@Com

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