Yes.
oxygen
To increase the oxygen intake to stimulate the heart and lungs. You can try exercises like pursed-lip breathing and deep belly breathing to open your airways and increase the amount of oxygen in your body.
Caffeine works by constricting the blood vessels and increasing the heart rate.
Increased metabolism required to make your body move more quickly or muscles work harder requires oxygen. The blood carries oxygen, and the lungs help the oxygen get into the blood. The heart goes faster so the oxygen can be delivered more quickly.Over the long term, they actually decrease with exercise, as the body gets more tuned. The short term increase in pulse rate and breathing rate, are to get more oxygen to the muscles. The heart higher breath intake is to get more oxygen in the blood stream. The heart rate increase is to get the bloodflow higher so even more oxygen can get into the muscles.
An increase in salt intake or retention, dehydration, excessive fluid intake, or a condition like heart failure can lead to an increase in blood volume. This can result in elevated blood pressure and increased workload on the heart, potentially leading to complications like heart failure or stroke.
We used more oxygen .
Your muscles need oxygen to work and oxygen is carried through the blood, propelled by the heart. When you run, you use muscles and your heart beats faster to increase the amount of oxygen reaching the muscles being used.
Breathing.
High levels of radicals within the body can contribute to oxidative stress, which is linked to the development of coronary heart disease. Radicals can damage blood vessels and contribute to the buildup of plaque, increasing the risk of heart disease. Adequate antioxidant intake through a balanced diet can help counteract the effects of radicals and reduce the risk of heart disease.
No, exercise doesn't increase the size of the heart. Exercise does strengthen the heart so that you can become more active in life.
Heart rate and respiratory rate will increase.
Because the heart has to pump more oxygen than usual to your muscles