It’s amazing to realize how our body functions in times of calm and in times of crisis. The astonishing fact is that the body which we possess is auto-regulating and modifiable in its functioning according to the environment. Our physical adaptability is also way higher than any other living creature on this planet. This is the reason why we have out-grown from a planet which was animal dominated into a planet which is human dominated. The dinosaurs have become extinct but we have not. We have overcome all the catastrophes, which this world has experienced and survived while many other species ended up.