Research: Possibility for getting tougher and thicker skin

Can you get thougher skin and thicker skin

Possible methods:

-Hitting it with the hand palms and fingers.

-Rubbing with sand.
-Hitting it with wood or something else that will make the skin glowing red.

-No or only mild soap. Extreme and dangerous: Not showering for long times. Or only with cold water.

Important: 1 No damage. 2 Giving the skin enough time to heal. 3 Don't overdoing it.

Training material for bite training

A good design with good material for bite training
-The material should be non toxic and very safe

For training all teeth together
Training only the front teeths
And for training the molars

By GOTT/GOD, Jef Koelewijn from South-Holland, The Netherlands

Sunglasses that can change the colour or colours of the glasses with the push of a button

Sunglasses that can change the colour or colours of the glasses with the push of a button

Sunglasses with a changeable amount of light blockage

Sunglasses with a changeable amount of light blockage

1 Just multiple glasses
2 With the push of a button
3 Reactive to light, changes the amount of light blockage according to how much light shines on the sunglasses. Should recover very fast after over exposure to light and not be damaged.

Jamming protection for unmanned aerial vehicles, air drones

Jamming protection for unmanned aerial vehicles, air drones.

By JK

Anti birth control pill, pills

So these should cause ovulation in a woman within a short period of time.

For if a woman had taken contraceptives.

By GOTT/GOD, Jef Koelewijn
From South-Holland, The Netherlands
08-07-2019

A metamaterial coil for a dynamo

Should generate more electricity then with a normal coil.

By Jef Koelewijn
On 04-06-2019

Research what is better: Not showering for a year. Or not changing clothes for a year.

So not showering for a year and changing clothes daily to around each day.
Or showering everyday or around each day and not changing clothes for a year.

My experience:
I once only took 3 cold showers, and did some minor cleaning with very small washcloths on vital areas like the groin area and armpits, for 1.5 years. And because I did change my clothing often, it did not seem to be a problem, I did not seem to smell bad and I did not get complaints or something.
But I was already trained by myself for this.

By GOTT, Jef Koelewijn

Ear, hearing regeneration

Can parts of the ear that provide and or are important for hearing be regenerated.

1 Normally, just by hearing training. Focussing, changing sound volume every here and there to a lower volume.
2 Certain volume acoustic hertz frequencies, for certain periods of time.

Testing: Transpirant luminescene, incandescence and fluoresent photovoltaics

Testing if these are possible: Transpirant luminescene photovoltaics if possible

Testing if these are possible: Transpirant incandescencephotovoltaics if possible

Testing if these are possible: Transpirant fluoresent photovoltaics if possible 

And testing multilayer with all 3.

By Jef Koelewijn