The Campaign for Better Seating sofas and armchairs You don't want to sit bolt upright on a hard chair all the time, you want to relax on a comfy sofa or armchair. To look at, to sit on for 10 minutes, or to sit on for 3 hours. What looks comfortable to the eye may not be comfortable to the body. And if a sofa puts you in a collapsed position, you will be in a physiologically stressful situation, not a relaxing one.
Furniture follows fashion like everything else.
Recent fashion is for very large, very soft sofas. These mould the body into a harmful posture putting strain on the spine, the digestive system, and the breathing. Everyone now knows that sleeping on an unsupportive mattress isn't good for the body and doesn't provide a restful sleep. Spending hours on an unsupportive sofa or chair doesn't provide us with rest or relaxation either, and it may be doing more serious damage long term. If not, the seat is too deep, or perhaps too high off the ground, but this is less likely.