short term effects of exercise

When we begin to exercise the body has to respond to the change in activity level in order to maintain a constant internal environment (homeostasis). Here are the changes which must take place within the muscles, respiratory and circulatory system. Changes in the concentration of CO2 and O2 in the blood are detected by the respiratory centre which increases the rate of breathing

what my result was

This is my results for mesuring flexability and they are 10cm and 11cm and this shows how we mesured our flexability.  Mark or take note of your best score, take a measure in cm or inches beyond the base of your foot, or you did not reach your toes, measure how far before the feet you were (a negative measurement score).

decreasing in resting heart

The number of times a walker's heart beats per minute while at complete rest. Resting heart rate will decrease as the walker's heart becomes larger and stronger with training. A low resting heart rate is an indicator of fitness. Your resting heart rate should be taken first thing in the morning, before getting out of bed. Find a clock or watch with a second hand or second display and take your pulse for 60 seconds.

effects of exercise

when you exercise your muscles slide against each other that crate friction and create little rips in the muscles and when they repair the muscle gets thicker and stronger.

If the rate of exercise is increased due to greater muscular activity, a point is reached at which not enough oxygen is supplied to meet the requirements of the muscle cells for aerobic respiration, as described earlier.
Anaerobic respiration cannot go on for more than a few seconds as the lactic acid/lactate builds up in the muscles and is said to cause cramp, or at least fatigue and soreness. In fact it is better to say that there is an equilibrium between the rate of production and the rate of removal of lactic acid/lactate.
http://www.biotopics.co.uk/newgcse/exerciseeffects.html i got some of this imformation from this website.

what happens to your muscles

Your muscles work by pulling in pair and one of the work by pulling and the other one relaxes. muscles are made up of fibre that slide apart to get longer andrelax together to get shorter pull and as muscles pulls it get shorter it pulls across the joint of the arm.

heart increase

Increased heart rate, or tachycardia, can be caused by a variety of substances, and many of them can be found in your everyday life in foods or drinks. Other chemicals that can increase your heart rate can be purchased -- illegally -- without any consultation with a health care provider. The increased heart rate may be inconsequential, may lead to some discomfort, or could lead to serious heart issues.

respiratory

Respiratory rate is also known by respiration rate, pulmonary ventilation rate, ventilation rate, or breathing frequency is the number of breaths taken within a set amount of time, typically 60 seconds. A normal respiratory rate is termed eupnea, an increased respiratory rate is termed tachypnea and a lower than normal respiratory rate is termed bradypnea.

The respiratory system is the anatomical system of an organism that introduces respiratory gases to the interior and performs gas exchange. In humans and other mammals, the anatomical features of the respiratory system include airways, lungs, and the respiratory muscles. Molecules of oxygen and carbon dioxide are passively exchanged, by diffusion, between the gaseous external environment and the blood. This exchange process occurs in the alveolar region of the lungs.