Why do fit people's hearts beat more slowly than unfit people's hearts?

Answer 1

The heart doesn't have to work as heard to circulate blood throughout the body because the arteries (pathway for blood) are clearer and there is less blockage. Unfit people usually have arteriosclerosis (hardening of the arteries) and atherosclerosis (accumulation of plaque); both of these make it harder for blood to move about the body, forcing the heart to work harder by pumping faster.

Answer 2

Since we all need oxygenated blood, nutrients, oxygen through our blood and body, your heart pumps to make that happen-to flow around your body with veins and arteries. To pump more oxygenated blood, your heart starts pumping faster and faster to meet your body's needs. Fit people's heart beat more slowly than unfit people's heart because fit people's heart can pump more oxygenated blood, nutrients, oxygen once while unfit people's heart can only pump a less amount of those, making the heart pump faster and faster.

Answer 3

A fit persons heart work better because its stronger because it can pump the blood more efficiently what means: that it works better.

Answer 4

That is what it means to be fit.