femur
Human thigh bones femur today can surprise you as it is stronger than concrete yes this is a fact you can’t negate it .Our human thigh bones are 10 times stronger than concrete walls and it can support up to 1 ton of weight .In spite of so much solidarity this bones are so flexible that we can run and walk so easily without any difficulty what a creation of nature.
So next time you have the knowledge to use your femur in a proper and effective manner.