How can you tellthat the boys do not pull punches in their fight?

You can tell the boys do not pull punches in their fight by observing their aggressive tactics and lack of restraint, as they deliver strong blows and show no hesitation in engaging fully. Their expressions and body language convey a serious intent, indicating they are committed to the fight rather than holding back. Additionally, the intensity of the physical contact and the sounds of impact suggest they are fighting with all their strength.