Dan began to worry, but they got busy turning out lights, shutting down several fans and locking the doors. When they returned to the sparring room, Lisa immediately took off her blouse, and sat down to remove her foot pads. Dan saw how her tits seemed to stand up and support her sports bar, rather than the bra holding up her tits. That was all of the incentive he needed to begin removing his clothes.

As Lisa was removing her briefs, Dan removed his cup, and she noticed he was sporting an erection. He seemed embarrassed about dropping his jock strap. She smiled and said “Don’t worry”, she pinched her nipples and said, “I’m hard, too“. It’s only human nature, then turned her back to him and walked into the middle of the room.

“Since, we can practice most moves during the earlier sessions,” Lisa instructed “we’ll concentrate on groin strikes now. I’ll go at half speed, and we’ll see how long you last, OK?”

Dan felt exposed with his boner bouncing as he walked out into the room. Standing this close to her and wanting to touch every part of her, was really clouding his judgment. He took a stance across from her and just waited in a stone like state.

Lisa circled to his left, sending a couple of jabs to his face. He was slow to block, and when the third punch connected with his left eye, he was blind to her follow-up kick. Lisa’s shin fit perfectly between Dan’s legs, pinching both testicles between his pelvis and thighs. She could see him falling forward and grabbed his shoulders to help keep him on his feet. As the wave of nausea passed, he opened his eyes, and wobbled a step or two. Lisa asked, “Are you alright?”

Dan chocked out a weak “Yeah, I think so…”

She released his shoulders, backed up and said “defend yourself”. Throwing a couple of wide slow fists towards his head. Dan began to block and move again, slowly regaining his senses. Lisa noticed that he would leave his arm extended after a block, so she grabbed his wrist, and lifted his elbow up in front of his face. Dan was off balance and needed to step forward to take the pressure off of his arm. “Bad move Dan”, Lisa said in a matter-of-fact tone of voice. Then she drove her knee up into his balls.

Dan cringed gritting his teeth, and realized that he couldn’t move as long as his arm was twisted. Lisa took full advantage and began to pile drive her knee into his unprotected nuts. Not at full speed, but enough to keep his full attention.

After 8 or 9 knees, she let go of his arm and moved to the side to allow Dan to fall into a fetal heap on the mat. Lisa went over for a drink of water and looked at the clock, “almost two minutes, not too bad for your first time.”

“Will I get better?” he managed to moan in a voice that wasn’t his.

“Sure, you’ll be up in a couple of minutes, but you’ll keep dropping like this until your testicles are conditioned to take the blows.” Lisa assured him. “What we should really be doing is concentrating on your conditioning.”

Dan began to almost breath normally, and asked, “How do we do that?

Lisa smiled to herself, this was going to be Fun!! “The same way you condition your knuckles or shins on a heavy punching bag. You repeatedly tone the body part, and it strengthens over time.”

Dan was groggy, but seemed to get the idea, “you want to keep kicking my nuts until they get used to the pain?”

Lisa came over to where he was now sitting, and gently pushed him onto his back, then placed one of her hands on each of his knees. She was beautiful, large firm breasts standing out, hair pulled back behind her into a ponytail, and a full view of her mounds as she knelt between his legs. “Not just kicks Dan, but punches and squeeze training as well. I’ll get a training card, and we’ll record how many of which kind of blows you receive. Then we can track your progress.”

Dan thought that sounded very professional, and found himself nodding his head ‘yes in agreement. Lisa didn’t wait, she had him place his hands under the small of his back and said, “first let’s see if you can take ten punches. Interlock your fingers under your back to keep from trying to block me, ready?”

Without any more warning Lisa switched her stance, sat between his legs, draping each of her legs over his to hold him in place. She grabbed his dick with her left hand, holding it up out of the way and made a fist with her right. “Splat, Splat, Splat, Splat” Lisa’s fist pummeled Dan’s fully exposed nuts directly into his lower abdomen. The air left his lungs as he tensed in shock. “Splat, Splat, Splat“, Lisa continued, as he began to roll from side to side to get his hands free. “Splat, Splat, Splat” she finished just as Dan managed to bring his fingers over to his embattled groin.

“There now Dan, that wasn’t so bad, you took ten direct punches to the testicles without blocking. Now let me check for any damage, …come on move your hands, …that’s right.” Dan moaned as Lisa rolled his balls around between her fingers. She was very thoroughly looking for any sign of a rupture, completely enjoying herself. By the response from Dan’s cock he was enjoying the examination as well, he got rock hard in no time.