It pumps the blood quicker to get more oxygen to the muscles...
Breathing helps your heart pump faster!
Your Heart
Your heart may need to work harder when your body requires more oxygen. For instance, if you are exercising, your heart rate increases to keep up with the muscles' oxygen requirements.
It increases it and causes the heart to work harder.
He forced the settlers to work harder and rewarded them with food.
Nope. Easier actually. Doesn't have to fight earth's gravity
The first thing is exercise. The faster rate is a good exercise for your heart. Balance Diet. A build-up cholesterol makes it hard for the heart to pump blood through the arteries. Avoid Smoking. Nicotine constricts blood vessels, causing the heart to work harder. Relaxation. Stress and tension force the heart to work harder.
He forced the settlers to work harder and to build better housing by creating rules that rewarded harder workers with food.
I know that being obese makes the heart work harder than it should. :)
It depends, people have different reactions to smoking. Smoking usualld mostly damages your lungs, but with heavy smokers, over time, their lungs will be quite injured and it would be harder for them to breathe. This will cause your heart to work harder do to lack of oxygen and there fore you over work your heart it is true that if your heart is diseased or have problems, it does not get smaller but instead grows in size
Obvious answer your heart and your muscles need plenty of oxygen and if you don't have enough oxygen, your heart needs to work harder so you don't die.
Yes, because the more you get paid the harder you are expected to work.
No. It speeds up if you work harder and slows down if you relax.