Can you bring me an argument that bodies attract themself?specially on the earth...?

When a mass is present in four dimensions it moves through one of the space dimensions you also travel unwittingly, through time. We are always travelling through time, but when you travel through space you travel through time by less that you expect. When a mass is present in the above space-time it distorts it so that whilst it remains true that travelling through space causes you to travel through time, travelling through time now causes you to move (accelerate) through space. In other words just by existing, you are compelled to move through space - this is gravity.