If you really want to hug, weight is not a problem. As long as you get serious, you may feel great power. How much weight a boy can lift has a lot to do with his arm strength. Doing pull-ups often can increase arm strength. Of course, the human body is a whole, and it also needs the coordinated strength of shoulders, back, waist and legs to mobilize the whole body strength.
The correct posture of the princess's hug:
Want to let the princess hug, not only by arm strength, but also by the joint efforts of legs and waist.
To stand beside a girl, put one hand under the girl's shoulder blade, slightly upward, and put the other hand in the position where her leg is bent. Both hands should exert their strength at the same time, so that you can easily complete the princess hug. Of course, girls who embrace the princess should not be silly and slow-witted. If you don't have to hold a boy's neck, it's not called a princess hug, but a dead body hug.