Question

one thing in our body runinge very fast .​

Answer 1

Answer:

Initially, you're going to be out of breath and your heart rate shoots up. You're breathing oxygen into your lungs and your heart is pumping oxygenated blood into your muscles. You won't feel great and your stomach can feel a bit weird. It's busy breaking down energy causing muscle cells to release gas.

Answer 2

D answer is in your text book
Search in ur text