This horse is reactive, it gives all it's got.
There is a strong cohesion between the man and the animal.
The jockey is not embarrassing his mount, he embrace its movement, becomes its continuation.
Adroit, he communicate to the horse all the energy it needs to jumb across the fence.
In a calligraphie's technical, the painter's breath is sustained and all his body is involved.
A physical preparation is essential to face the choice of surprise.