Does it have to do with insufficient lift or just not practical?
In: Physics
Flapping motion is not enough to overcome the force of gravity. Human bodies would have to be made completely out of muscles for that to happen – we are too heavy, our “wings” are too short, and we weigh too much.
Birds have light frames and hollow bones, as well as air sacs which make them lighter. The forces that drive their bodies upwards would therefore overcome the downward force created by their weight.
Tldr: human bodies are simply not designed for flying via flapping motion
Latest Answers