When she finished in the locker room, Lisa went to her office grabbed a clipboard, workout tracking plan, tape measure and headed back to the sparring room.

Dan was sitting up, holding his balls gingerly in one hand and slowly rocking back and forth on the mat, moaning a low primitive sound.

As Lisa came over to sit in front of him, he instinctively tried to back away. “Oh don’t be silly” she said, “we’re done for today. You did very well for your first lesson!” She said cheerfully.

“Now let’s begin a chart to document your progress. You took one front kick, ten knees, ten punches” she recited as she wrote down the numbers and categories. “Thirty seconds of squeezing, two kicks from behind, and full two minutes of stomping. You were great!!”

Dan didn’t say anything, but he was encouraged by her praise. Lisa was so enthusiastic, that he couldn’t bring himself to say he might not come back for a second lesson.

Then she put down the clip board and moved between his legs with the cloth tape measure, recording the length, width and circumference of each testicle. “We should probably weigh them as well, but I’m sure the measurements will be fine for our purposes. Next time we can measure them before and after your lesson, then we can see when they are getting accustomed to our regiment.”

Lisa was fully clothed, and did another exam of his testicles, ensuring they hadn’t split open. They were warm to the touch, completely black and blue, swollen to an unbelievable size. She was fascinated to see they filled the fleshy scrotal sac, but were intact. The outer sheath of each nut was stretched to it’s maximum, and he was getting hard again as she probed his bag. “Looks alright to me, let’s see if you can stand up and walk it off a little.”

He was able to walk, and they both figured that he had recovered enough to drive home. Lisa finished closing up the gym as he dressed, then she let them out and watched him get into his Porsche. “See you Friday, Dan” she called before he closed the car door, “nice car” she thought “and what a great sport. I hope this arrangement lasts.

Dan can back on Friday, and again the gym was almost empty. Lisa greeted him cheerfully, saying, “the janitors are almost done, and there are only two other people in the locker rooms getting dressed. When they leave we can lock the doors and have the whole place to our selves. Let’s go stretch out and warm up.”

Dan was still tender after two days of recovery, and frankly a little skeptical about being able to survival another ‘private lesson’. He intended to tell Lisa that when she joined him.

It was almost ten minutes before she came into the sparring room, she had the clip board and what looked like a couple of terrycloth waist belts from the robes in the sauna room. “These are to help you keep your hands behind your back, so you don’t block any of my hits on your testicles” Lisa said cheerfully. Go ahead and disrobe, we’re alone, the doors are locked. I’ll be right back, I forgot the tape measure.”

Off she went before Dan could voice a word of protest. He did as he was told, and was standing naked in the center of the room when she returned. She held the cloth tape measure and grabbed the clip board, ordered him to sit down and began to measure the dimensions of his balls. They were still tender, but he was fully aroused by the time she finished.

“Your right testicle is larger than your left one, and they are less than half the size they were when you left here on Wednesday evening. I really didn’t expect them to swell up that much. That’s so cool!!” Lisa was acting like a young teenager, almost giggly.

She moved the clip board and grabbed the terry cloth waist belts, asked Dan to roll onto his stomach and began to tie his wrists together behind his back. She the tied his ankles together, and used a third belt to join his ankle bonds to his bound wrists. With his help Lisa rolled him onto his back again. The result was dramatic, Dan’s knees were spread wide, his hands were trapped under his torso, and he couldn’t even think about closing his legs.

“Ready to get started?” Lisa asked as she sat between his knees, using her legs to help stabilize him.

“Dan realized she wasn’t getting undressed, and said, “Aren’t we going to fight naked, again?”

“Since we need to condition your testicles before we can really ‘fight’, there’s no need for me to disrobe.” Lisa explained, “we’ll get you up to speed and after a couple of more lessons we’ll spar a lot longer than we could tonight. Now let’s pay attention, ready?”