Nope. Easier actually. Doesn't have to fight earth's gravity
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.
the astronaut heart and muscles and bones shrink and get weaker ...this because: the earth's gravitational pull is strong so the heart pumps blood harder than it needs to in space so when a astronaut is in orbit it doesn't need to work so hard so they shrink. hope this helps.
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.
It pumps the blood quicker to get more oxygen to the muscles...
I know that being obese makes the heart work harder than it should. :)
If blood flow slows down, the heart generally has to work harder to maintain adequate circulation and meet the body's oxygen and nutrient demands. This increased workload can lead to higher heart rates and greater force of contraction. Over time, if the heart is consistently required to work harder, it may lead to strain and potential cardiovascular issues.
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.
No. It speeds up if you work harder and slows down if you relax.
He was teased because he was bi-racial, obviously he took it to heart to study harder, work harder and be better that the people who had it in for him, look where it got him!!!! lol