Monday, 23 March 2015

Mitchell Bright unit 4 - Assignment 1

Increased heart rate
When you exercise your heart rate goes up because your muscles need oxygen so your heart pumps the blood to your muscle with the oxygen in it this is because you muscles need next oxygen to be able to get the strength to move.

Increased breathing rate
your breathing rate increases when you exercise because  your  are making your muscles work harder. This is true no matter what kind of exercise you're doing. If you're lifting weights, you're using the muscles that will give you the body of a fitness model; but if you're doing aerobics or cardiovascular exercise (like running, bicycling, or rowing) you are still using one muscle in particular .Your blood picks up oxygen as it travels through your lungs and delivers it to the muscles you're using. As your level of activity increases, your breathing rate increases to bring more air into your lungs so that your lungs can pump more oxygen into your blood and out to your muscles.

Sweat production and skin reddening
When exercising you sweat  this is because you body has a natural cooling system by releasing sweet so when air gets to you its cools down you skin because you sweat is water what  then leads to you body cooling down. your skin reddens because you are hot and your blood rises to the surface but because of the process I just explained you blood cools and goes down what decreases the redness.

Increased blood flow
when you exercise, the blood vessels in your muscles dilate and the blood flow is greater, just as more water flows through a fire hose than through a garden hose. Your body has an interesting way of making those vessels expand. As ATP gets used up in working muscle, the muscle produces several metabolic byproducts These byproducts leave the muscle cells and cause the capillaries  within the muscle to expand or dilate (vasodilation). The increased blood flow delivers more oxygenated blood to the working muscle.

Increased production of synovial fluid for joint lubrication and nourishment

When exercising the synoviun will create synovial fluid witch will make it smooth when your knee and other joints move. This is like a door if you don't have oil on it what will creak but with the oil it wont creak.

Increased joint range of movement due to increase in blood flow and increased muscle temperature 

When trying to stretch if you warm up your body by pumping blood around your body your muscles will get warmer and you will be able to stretch further

when your muscles get warmer they stretch farther because they are more elastic.

Micro tears in muscle fibres, causing the muscles to rebuild itself and become slightly bigger and stronger
When exercising  for example lifting weights you are actually tearing micros in your muscles witch heal themselves and come back bigger and stronger

Exercise encourages new bone formation
Diet and exercise makes the bone stronger what prevents osteoporosis. calcium is the mineral that makes you bones stronger that is why you are told to drink milk when you are younger as you bones are still developing.










Increased metabolic activity
By exercising you increase your metabolism this means that you burn off more calories even when you have stopped exercising.

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