Gripping cardboard with one hand and making it smaller Making cardboard into a square, rectangle or ball like shape with one hand By Jef Koelewijn, from The Netherlands.

Gripping cardboard with one hand and making it smaller.

Making cardboard into a square, rectangle or ball like shape with one hand.

-And it might be important that the cardboard is of a good quality

By Jef Koelewijn, from The Netherlands

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

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.

More information for breaking wood

More information for breaking wood.

The kind of wood.

-There's all kinds of wood, from soft wood to hard wood.

More information for human nail gun

More information for human nail gun

1 The kind of wood

-There's different kinds of wood from soft wood to hard wood.

2 The thickness of the wood

3 The measurements of the iron nail

  The sharpness of the nail

An idea for another kind of boxing competitions

1 minute rounds. 3-5 rounds.

Knockdown is a loss.

Three gripper training variations

Low grip, gripper closes. Medium high grip, gripper closes. High grip, gripper closes.

Low grip, medium high grip and high grip, hand gripper training.