Smile

The 'win' in 'winter' is for winning the game in the mind first.

Fine tuning

Parkour is a territory to fine tune an attitude. Requiring navigating trough narrow spaces. To come out without injury and live the experience.

Comfort leads to destruction

Kennemer dunes yesterday. Training is to remain faithful to the development of potential. To approach the world with an open mind and a kind heart.

Basics

'Winning'  in training is the achievement of doing it. 

See also :

Navel of the world

Power vs Force

Sharp

A sharp knife can safe a runner's life.

Despite the naked, unprotected exposure to objects that have the potential to injure the barefooted runner, wounds are exceptionally rare though. In the domestic environment injuries occur more often — small pieces of glass are the main cause of cuts. Thorns are the most common perpetrators of barefoot obstruction in the outside world. Their smallness is inversely proportional to the cause of hinderance and need to be removed to remain fully mobile and in balance. A sharp knife -- and the abililty and willlingness to use it -- is one of the few basic tools that serve the barefooted runner well.

See also: https://bartvanbroekhoven.com/en-US/component/search/?searchword=thorn&searchphrase=all&Itemid=298