Most people think of a "normal" body temperature as an oral temperature of 98.6°F (37°C). This is an average of normal body temperatures. Your temperature may actually be 1°F (0.6°C) or more...
Temperature is particles moving really fast and bumping in to each other (in a sense, but nothing really "touches" other things atomically or else they fuse), unless of course, they are at 0 D....
Pleural pressure is negative (lower than alveolar pressure or barometric pressure) because of a "suction effect" caused by lung recoil. As the lungs recoil elastically, the inner and outer pleural...