Lower extremity needs most blood supply when climbing the stairs. This supply goes to the muscles.
The muscle cells which are present in the legs requires the most amount of oxygen while climbing the stairs because it needs to produce a lot of energy to be able to move fast.
Using the stairs is a simple and convenient form of light exercising.
Yes. You perform the work of lifting your body weight a distance equivalent to the height of the stairs. This is why some older or overweight people get out of breath when climbing stairs.
The body needs oxygen to survive, and blood carries oxygen to cells in the body.
The air carries oxygen to your body when it is inhaled into your lungs.The blood carries oxygen through you body to the vcells that use it as part of their metabolism.
If you intend to use artifical oxygen or not, everyone needs to acclimatize before climbing to the summit of Mount Everest. Acclimatization allows your body to adjust to the thin air of the Himalayas, this process will give you a better chance in reaching the summit.
Every cell in your body needs oxygen.
the human body needs oxygen and other nutrients to survive
chemical energy (stored in the muscles of the body) turns to kinetic energy (climbing up the stairs) and then is transformed to potential energy (once you reach the top of the stairs) due to your position.
Ellipticals work the lower body muscles such as the abdomen and legs. Consider an elliptical similar to biking or climbing up stairs.
So your body gets the oxygen that it needs to survive
Because you must exert more energy to lift your body to each higher position, than when you simply walk on a level surface. You should also notice that you breath harder when you climb enough stairs or enough of a hill. This occurs because more oxygen needed when your body burns the energy that is stored in your muscles to do the work that is necessary to move you to each higher position.