I won’t lie to you, I have never done one squat in my life so it will be hard for me to comment on if they are difficult or not. I am going to venture to say, given that this is a world record, that squatting 187lbs as a 9 year old is easier said than done.
Naomi Kutin squats 160 and 187 at a body weight of 88 lbs, at age 9! This breaks the 100% Raw record of 180 for the 97 lb class, held for a number of years by a woman in her late 20’s. Lifts done April 3, 2011