2/ 🧵 Our bodies need a lot of oxygen to operate, so the moment we start exercising, we inhale deeply. Besides that, our muscles need even more power to respond to the training programs we are attending. This causes the heart to beat faster so that every body region may have enough blood and oxygen.

When we run or lift weights, our hearts must work harder to push blood to our hands and feet. This raises the systolic pressure needed to hasten blood flow to specific body areas, causing a faster heart rate and a different heart rhythm.