Why does my body resemble an office chair?

My body has taken on the shape of an office chair due to a sedentary lifestyle and extended hours of sitting. You can see the slight curvature in my back, mimicking the design of a chair's backrest. My legs, often stationary or rested, resemble the static chair legs. The broadness of my shoulders can be likened to the chair's armrests. Translate this into a physical image - a person sitting, with their back slightly curved, legs at a comfortable rest, and broad shoulders relaxed like armrests. Their posture mirrors the silhouette of an office chair.