Leverage training with a shovel and sand

Leverage training with a shovel and sand.

Putting the shovel into sand and lifting it up, and holding the shovel while the sand is still on the shovel.

-More sand is harder

-Further away from the shovel blade and sand is harder

Researching if constant black and white screens are better for developing night vission

Notes:

Researching if constant black and white screens are better for developing night vission.

It's said less colours for night vission. Certain eye cells. At night less to near no colour visable.

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Software.

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Also for:

Extreme night devission(s).

Or preperation.

And or keeping night vission or preparing for slight better night vission..

Better data storage update

For data storage, hardware. 

More data capicity

Smaller

Faster workings

-Faster writings

-Faster readings

Less electricity use

Longer lasting

More resistant against falling and resistant against electromagnetic pulses and more.

And also maybe more different methods to safe data. 

Something else then the current magnetic storage. Or another form of magnetic storage.

A compound ballista

A compound ballista.

-With turning parts and rope multiple times around.

And a very big one.

Maybe with a turning wheel, to span it.

A spring steel ballista

A spring steel ballista.

And also a very big one.

Warning: Can be dangerous.

Chain climbing

Chain climbing.

With gloves and also barehanded.

Multiple chain thicknesses and singular chain part lengths.

Strong and tough hands are important for barehanded.

Warning: Can be dangerous.

Being able to distinquish multiple sounds and hear sound correctly and more

Being able to distinquish multiple sounds and hear sound correctly and more.

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Being able to concentrate on sound. 

Being able to hear someone or something when there's noise(s).

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Training.

Increasing noise and noises. While needing to hear someone, recorded words or sentences or hearing something.

Making a full training.