Kyle began the workout session with Aiysha and what she did by hitting his stomach showed him that he didn't have proper control once his breathing was strained.
This meant that he couldn't work out or maintain his routine once an external factor came into play to disrupt it.
Aiysha knew he had been stabbed and this was why she didn't hit him hard enough to cause that much pain but rather, focused on his pressure point.
"Damn! That was harder than I thought!" Kyle exclaimed, breathing heavily.
"You lasted longer than I thought you would," Aiysha complimented him. Even with his skill, Kyle could only last so long, showing him that this could potentially be a weakness.
"You're just saying that," Kyle muttered, trying his best to get his breathing under control but this allowed her to point out the workout that they needed to focus on.
That was to control his breathing even when an external force strains it.
