Very banal exercises, but look more carefully, look at the details. Observe the exact form of their body during exercise. It pretends to lengthen itself, but in reality, it does it only partially. It lengthens itself here, but makes concave hollows and shortens itself there. In other words, it cheats, it plays tricks, it compensates. Conclusion“ our body does not do what the brain commands. Why? Because our muscles rarely have sufficient length to satisfy that command.

I lengthen my back, yes. But at what price! The back of my neck makes itself shorter, otherwise I could not place my lumbar muscles.

I lengthen my neck, yes! But my torso lifts itself, deforms itself. It makes a concavity in the lumbar region. My back does not flatten itself on the ground.

I raise my arms in the air.
I think that I lengthened myself. But oh, oh, between my shoulder blades and my lombar muscles, there is a concave surface: I dig a hole and . . . . shorten myself.

I lean forward. The muscles, so powerful but so stiff at the back of my knees (the ham strings) refuse to lengthen: a marked concavity forces me to bend my legs.