When
fat sex dolls boast "real-life proportions", they often ignore the truth of engineering. A hot-selling model has a complaint rate of 17% for automatically leaning back and smashing the floor when sitting because of excessive hip circumference and rear-positioned skeleton. Standard
full body sex dolls also have sitting balance defects, and the head weight exceeds the limit, resulting in cervical fractures. The intelligent center of gravity adjustment system is the future: magnetorheological fluid weight capsules are implanted in the buttocks, and the viscosity changes dramatically after power is turned on, and the center of gravity migration is completed within 0.5 seconds. Tests show that this system improves the sitting stability of different body types by 400%.