It's not known to the public, but many elite military units override the aspects of building the body to the highest level. As their ultimate goal was to build the undying will to act.

That's why, it was not uncommon when in training personnel were thrown into situations that exceed their physical limits. For example, through excessive physical activity combined with unbalanced energy intake. A training method that actually could damage physical potential.

Then, why would the counterproductive methods be applied?

The answer was that no matter how perfect, human physical capacity still had its limit. As for the will to act, it was limitless as far as one knew how to dig them.

There were many examples where a personnel had lost all of his comrades, while his energy, mental, and adrenaline had been drained out, but the personnel was still able to complete the mission thanks to his undying will to act that transcends human boundaries.

In his previous life, Hide had successfully passed the training commonly known as 'Testing the limit of the human spirit', and the results of the training were still stored in his soul to this day.

Therefore, in this life Hide only needed to build his physical capacity to the highest potential. Like professional athletes who over the years built muscles they needed. One but perfect thin layer that was combined with the next better layer.

Five days have passed since Hide accompanied Takeo to learn how to drive. As usual he went to Beauty & The Beast after school. Today, his training routine was a 40-minute marathon swim.

Hide did the swim by circling the edge of the pool and changing styles each time he completed a lap. Of course, currently he was still unable to use full speed for 40 minutes without pause. But at least, he was able to do it at moderate speed.

As soon as Hide finished swimming, Hanna immediately helped him dry his body, then asked him to lie down on the mat not far from the edge of the pool. The sports massage session then began.

Sports massage should be given while the body is still warm, and if the recipient's body is too cold, baby oil or a special blanket must be used. For Hide, Hanna chose to use a special thin blanket that could hold body heat.

Five minutes after Hanna started the massage, Hide's body was flooded with sweat. A positive sign, because it means that the acetic acid or the burning residue that had accumulated in his muscles was being burned out. Sweat that was pouring down profusely was also a sign that Hide's blood circulation was running smoothly.

When Hanna massaged Hide's arm, she felt an additional muscle layer. So she asked, "Hide, apart from my menu, have you done other exercises that require a specific arm swinging movements?"

"Yes, every morning I throw a tennis ball at a target on the wall by swinging my arms like a whip from below. I do it as a means of stress relief. There are at least 200 reps per session."

A lie smoothly slid out from Hide's teeth, as what he threw every morning was combat knives and not tennis balls. But of course, Hanna didn't know that she was being lied to.

Hanna casually said, "Well, it makes your arms stronger and more flexible. It also doesn't clash with the menu I gave you. So you can carry on as long as you apply adequate rest and nutrition intake."

Hanna then smiled a little before continuing, "Looks like you are also getting used to my massage."

"Yupe," Hide replies shortly, while Hanna smiles again.

Hanna clearly remembered when Hide told her that he wasn't used to being massaged, right before the first massage session started. At that time, she ignored Hide's warning, and the first session ended in a fight.

Luckily, in the second session a mutual understanding between the two was slowly forming. Hanna was extra careful when she gave the acupressure, while Hide tried desperately not to squirm.

And now, in the fifth session to be precise, Hide was able to lie down like a wooden block so that Hanna could do her job easily.

With a teasing tone, Hanna then asked, "Hide, what about sex? If you can't let a woman touch your body, how are you going to do it?"

Hide calmly answered, "I'll tie my partner's feet and hands, as well as gag her mouth and cover her eyes. Maybe I'll also sedate her first so I can do it freely."

Hanna reflexively frowned. "Hide, I hope no woman will marry you."

Hanna then squeezed Hide's butt as hard as she could, and a hysterical scream suddenly was heard to every corner of the pool.

---

In the twilight sun Hide walked out of Beauty & The Beast, and he immediately frowned as Takeo walked over to him with a smile. Even so, Hide did not avoid Takeo.

As he walked next to Hide, Takeo said cheerfully, "According to the target you set, today I can park backward at full speed. As for the symmetrical maneuver, from the starting point to the endpoint I can reach a maximum speed of 80 km/h and only hold the steering wheel with one hand."

A proud smile spread across Takeo's lips before he continued, "Is there another target I need to meet?"

Hide casually answered, "No, higher targets won't have any effect, it's about time you change the menu."

"Change the menu?"

A question mark appeared on Takeo's forehead as Hide continued.

"On the west side of Old Pier, you will find two tracks of used tires, each 3 meters wide, form the letters Z and S, and from end to end both are 500 meters long. You can measure them using google earth if you don't believe me."

Hide paused for a moment before continuing, "Starting tomorrow, apply symmetric maneuver and free maneuver on both tracks. Perform the two as many as possible but with the same quota."

"Is that the last practice before I can ride on the highway?"

"No, what you have been doing so far is a small warm-up. The basic training is what you will do from tomorrow. Then, you can go for a more complex menu before going for a walk on the highway."

Takeo nodded before hesitatingly asking, "Can I ask a question that has nothing to do with your training menu?"

"You can, what is it?"

"What is the difference between SOHC and DOHC engines?"

"SOHC is a Single Over Head Camshaft. DOHC is a Double Over Head Camshaft. For more details, you can find it on the internet."

Takeo let out a long sigh before saying, "I've been reading various references on the internet for past few days, but I still don't get a picture that I can understand."

Hide then led Takeo into an alley, and leaned against a wall before saying, "I'll give you a quick overview. So listen carefully."

"Okay."

"Imagine there are four lanes, some vehicles only have two lanes, but for my explanation we will use four lanes as a reference."

After Takeo nodded slightly, Hide continued his explanation.

In the SOHC engine, the four lanes were used to pump air and fuel into combustion chamber, as well as to pump out the combustion residues. This alternating pump-in and the pump-out cycle would produce rpm at low-medium levels, around 4000-6000 rpm.

The single-channel made the size of the engine very compact. For example was Hondha Civix. To remove the engine, it only took 2-3 people to lift it without the need for a pulley. The single-channel also made the engine more fuel-efficient, but it could be very dirty if you were late for service.

With a medium-level rpm, the vehicle would also have a very responsive acceleration. This means that the car would be very comfortable to use to overtake in the crowd or to maneuver on the road that could not be said to be a turn but also not a straight one.

"Now for the DOHC engine."

Without giving Takeo time to digest his explanation, Hide continued.

In a DOHC engine, there were four lanes for pumping air and fuel into the combustion chamber, as well as four other lanes for pumping out the combustion residues. This simultaneous pumping in and out cycle produces a fairly high rpm, at least around 8000 rpm.

The two lines made the DOHC engine bigger and heavier. For example was Toyoto Correla. To install or remove the engine a pulley was needed. The fuel consumed was also greater than SOHC engine in the same class, but the engine would not be fussy even though it was rarely serviced.

With a high rpm, the vehicle had a lot of power and was comfortable to use on an empty straight road. Compared to SOHC engines, DOHC engines also excel when the car had to make full turns. Because in the same gear the DOHC engine had a higher rpm, and a higher rpm means more power that was vital for pushing the car body when turning.

Hide look at Takeo's excited face before giving a serious warning, "However, to be able to feel and take advantage of a DOHC or SOHC engine, you need at least 5000 hours of intense training. So don't think about it for now.

And as I said before, focus on your training and we shouldn't interact in public too often."

Takeo nodded, then he asked another question, "How about a twin-cam engine?"

Hide sighed silently, but he still answered Takeo's question.

"The twin-cam engine only has four lanes like the SOHC engine, but each lane is divided into two. Half is the fuel and air inlet and the other half is the exit for the combustion residues."

While Takeo nodded, Hide asked, "Can I go now?"

"Ummm... yeah."

"Thank you."

Without wasting time Hide then walked away. He had to get home before Aizawa, so he had to hurry.

Meanwhile, Takeo was still standing, lost in thought to digest the enlightenment he had just received.

*****