Armwrestling Mother vs. her 10 to 15 year old son

My mom is so much stronger than me. It's kinda cool. I am quite muscular and work out, i am 6"1, 180lbs, and she is 5"4 165lbs. She is a lot more muscular than me and always kills me in armwrestling and wrestling. Although i can lift her, she can lift me far easier, in any way she wants.