Children grow up by falling down to floor many times a day. Young persons also are not afraid of fall, as their bodies are so flexible. Middle aged people are afraid to fall, but fall is not fatal to them. They can recover in a short time by the cure of doctor.
Only the old people have scared very much when the fall is upon them. It is true that many falls of old person result in strike or even to death. Therefore, fall to old person is a problem of life and death in a matter of minutes. They walk so cautiously anywhere they go.
Most falls of old people happen in their home. It is because they think that they know their home so well, and carefulness is neglected. But, when they go outside to the street, they walk so carefully, step by step, watching the ground every second. Thus, percentage of old person’s fall outside are lower than at home.
Many falls will cause old people to have a strike and they have to lie on bed all their life. But, strangely, they can live life quite long, ten years even more. May be that it is the light meal which causes less burden in the stomach and another reason is due to the slow beat in their heart. Slow beat in heart is the main reason of long life.