because without oxygen you cant breathe.
Oxygen makes up about 65% of the human body by mass.
A lot
Each human body has a different about of oxygen in it. A male weighing about 148 pounds has 65% oxygen.
65%
Oxygen is essential for cellular respiration, a process that generates energy for the body. It is needed to produce ATP, the energy currency of cells, allowing them to function properly. Oxygen also plays a crucial role in the immune system, helps in the detoxification process, and supports overall brain function.
On average, the human body is composed of about 65% oxygen by mass, primarily in the form of water (H2O) and other organic molecules. This oxygen is essential for cellular respiration, which is the process by which cells generate energy.
In an effort to take in as much Oxygen is available to us, the human body increases the number of RBCs in the system, which also would reflect in a higher Haemoglobin count for such people.
The average adult human body contains about 3-4 grams of iron. It is an essential mineral that is important for the production of red blood cells and transporting oxygen in the body.
The human body needs approximately 550 liters of oxygen per day to sustain normal function. This oxygen is utilized in various physiological processes including respiration, metabolism, and energy production.
The brain only represents 2% of our total body weight. Interestingly, it consumes 25% of the body's oxygen.
In an effort to take in as much Oxygen is available to us, the human body increases the number of RBCs in the system, which also would reflect in a higher Haemoglobin count for such people.
The percentage of oxygen in inhaled air by humans is approximately 21%. This oxygen is then absorbed by the lungs and transported by the blood to the cells where it is used for energy production in the body.