Heterosexual Pleasure from An Engineer’s Viewpoint: Why Slow Sex Works

Heterosexual Pleasure from An Engineer’s Viewpoint: Why Slow Sex Works

by Tim Anderson, World Association of Sex Coaches Student Member

When addressing issues with achieving sexual pleasure, sex coaches will talk to their clients about their Mind, Emotions, Body, Energy, and their inner Spirit. This is all good. There is another view (which can be part of the Body) that has to do with how intercourse works—or the Engineering view. This is my engineer’s view and I hope it helps you, the reader.


Everything is made the way it is for a reason. We may or may not know that reason or be able to figure it out. Engineering only looks at function and what it does. Emotional bias is removed. The common missionary position of the couple is also assumed.


First is to gather the known information about the parts involved in intercourse and their function as related to this article.

The penis— The penis consists of a “sloped gland”, a ridge, and a shaft.

The ridge is the part between the gland and the shaft. This area contains thousand of nerve endings. The shaft and gland in comparison have a lot fewer.

The vagina—The vagina is a tubular part of the female genital tract. The G-spot begins approximately one and a half inches and extends about one inch. The G-spot when aroused, consists of several engorged blood vessels which contain thousands of nerve endings. These blood vessels create a series of ridges.

The clitoris—the clitoris is outside and above the vagina.. Depending on the anatomy of the individuals and geometry, the clitoris may or may not be involved.

Intercourse occurs when the penis is in the vagina and the two parts create a friction when traveling the allowable distance of one or the other.  If a side view of the intercourse action could be accomplished, one would see that the ridge of the penis may or may not be contacting the G-spot. Note that both of these locations contain a high number of nerves.

It is beneficial to analyze and engineer the geometry of the action involved. What is the angle of the penis? How well does the penile ridge come in contact with the ridges in the G-spot? What is the speed of the penis going through the vagina?

If we theorize that the two areas of the most nerves are to be in contact with each other to create arousal in both participants, then geometry becomes an important factor. Second is the speed or amount of time that both nerve areas are in contact. Third, note that the shape of the gland is sloped and the backside or ridge is vertical.


Starting with the geometry or angle of the penis, we can determine that the angle needs to be such that the penile ridge comes in contact with the ridges of the G-spot. Secondly, the speed of the penis needs to be such that the penile ridge has time to drop into the areas between the G-spot ridges. So looking at the travel of the penis, going into the vagina, the vagina is opened by the slope of the penis and simply glides over the G-spot ridges. When the penis travels outwardly and because the ridge goes vertically from the shaft, the ridge can drop into the gap between the ridges and create a “pulling” on each G-spot ridge.


The common viewpoint of people is that the penis going into the vagina is doing the arousal of the parties involved. However, it looks like there is a higher arousal that can occur when the penis is going outward, that is, the penis going slow enough to come into contact with the G-spot ridges.

Specific Suggestions:

  1. Use a thin pillow under the woman to change the angle of the penis into the vagina. Note: It may be possible to see a small lump between the mound and the stomach button as the penis travels in and out.
  2. The man starts by taking 3-4 seconds to travel in and out of the vagina (  when going out, stop before the ridge exits the vagina ). It is important to keep a steady pace.
  3. If the woman orgasms, the man would stop and hopefully enjoy her orgasm. Then, resume at the same pace. Repeat as desired.