Escher used black and white. High contrast, which dramatized his art and also brought more attention to what he was drawing, not just the colours.
His “impossible constructions” were shocking. He played with perspective and juxtaposition in a way that couldn’t possibly be true in real life. The audience has to do a double take. Angles and shapes were twisted in impossible ways.
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True, Exercise physiology is the field that applies the laws of physics and mechanics to human performance, because it helps you endure more wich gives you stamina to successfully achieve harder exercises.