WHAT WILL HAPPEN, IF YOU GO TO SPACE, WITHOUT THE SPACE-DRESS
When we go under water, a feeling will come as if weight is there over the head. The reason is that the pressure given by the water which is over the head. Living things under the sea lives in that pressure. It is dangerous to bring it to the upper portion of the sea. The body of the living thing may burst as the pressure decreases suddenly.
Likewise, our body is framed so as to bear the pressure near the ground level. Our body is pressurized in the ground, due to the pressure of the air. There is no pressure in the space. Therefore, there are chances that our body will be pressurized, and burst, in the space where there is no air pressure, even though we have oxygen-cylinder.
If there is difference in the air-pressure, heart-functioning, muscles bone-structure and nervous system will be affected. As air has been filled up in the room of the space- station, we get pressure. Here the temperature is also maintained carefully.