Punches to the soft side of the arm, very effective and under estimated - One of the worst injuries i ever had was a straight knee to the inside of the upper arm, my whole arm went blue and took 3 weeks to go back to normal oO
@@coresystemacombatives It actually went away and then came back again as a red bruise in the middle of my forearm a week later lol , long time ago, 20 years muay thai, now enlightened in Systema for 5 years :)
