It’s Hump Day!

For a brighter morning, improve your angle the night before

Join the national crusade!

No pills, and nothing to remember or forget

Your girlfriend’s uterus, vagina and bladder, courtesy of the TSA

Transportation Security Administration imaging information. image of a TSA airport scanner

Enough with the anal sex obsession!

How warm and cold impact the scrotum

It’s the cremaster and dartos muscles that cause the testicles to raise and lower. See this post for an explanation of how they work.

Images from WikiMedia Commons.

Watch your boyfriend’s testicles raise up when you caress his inner thighs

Testicles move closer to the body when they are too cold, and further from the body when they are too warm. They also move closer to the body when a man ejaculates. In some men, they move so close to the body during ejaculation that they almost seem to disappear.

There are two different muscle groups that help raise and lower the testicles: the cremaster (skeletal muscle) and the dartos (smooth muscle).

Cremasters  Each testicle has its own cremaster muscle. The cremasters begin in the abdomen. They hoist and lower each testicle like the chain on wrecking ball or the chord of a chandelier. When they are activated by cold or ejaculation, the cremaster muscles quickly draw the testicles closer to the body.

If you want to make your boyfriend’s balls go up and down, try running your fingertips along the skin of his inner thigh. This will trigger the cremasteric reflex, which should cause at least some upward movement of the testicle on that side of his body.

Dartos  The dartos is a very different type of muscle than the cremaster. It is actually a sheet of smooth muscle that runs along the wall of the scrotum. It makes the scrotum cradle the testicles like a pair of hands that slowly draws the testicles into and away from the body.

When the testicles are cold, the dartos contracts, making the skin of the scrotum pucker up. This reduces the surface area of the scrotum so less heat can escape. When the testicles are hot, the dartos relaxes. This lowers the testicles away the body and increases the surface area of the scrotum so more heat can escape.

The cremasters work quickly, while the dartos muscles work much more slowly.

A special thanks to Dr. Claire Yang. 

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