brcasue you are using oxyen which breakks down glucose and co2
it will increase
During exercise, the body requires more oxygen to fuel the muscles, which leads to an increase in breathing rate (respiratory rate) and heart rate to deliver more oxygenated blood to the muscles. This helps to meet the increased energy demands of the body during physical activity. Regular exercise can improve cardiovascular and respiratory system efficiency, resulting in lower resting heart rate and more controlled breathing.
Physical exercise or activity increases the rate and depth of respirations and the heart rate and hence the supply of oxygen in the body.
Treadmill
Your breathing speeds up when you exercise in order to get oxygen to your muscles and heart.
I can repair my heart in a non-scientific way - by meditation and breathing exercise
hmm heart rate maybe?
Breathing.
Because of the increase of pulse in your heart.
If you are fit, your breathing rateand heart rate arelow. During exercise they rise, but afterwards they return to normal very quickly. This is called they recovery rate and it is a good indicator of exercise.
When you are exercising, you are breathing in oxygen (O2) and it is get the heart to pump more blood to your body
excess breathing and increased heart rate.