The gallbladder concentrates and stores bile as a pear-shaped sac which it can release to help digestion after a fatty meal.
Aerobic means with oxygen. Aerobic exercises are those that improve the working of the cardiovascular system which absorbs and transports blood. These exercises increase the total number of red blood cells. Aerobic exercises are usually of moderate intensity and are carried out for sustained periods. Jogging and jump rope are good aerobic exercises.
Aerobic exercise is an exercise type that places demands on the cardiovascular system. Any exercise that challenges the heart and lungs is a cardiovascular exercise. It involves working out the large muscle groups in the body. It increases the need for molecular oxygen in the muscle. The oxygen is provided through inspiration. Aerobic exercises improve stamina, flexibility, strength, and co-ordination. It helps to bring down the levels of blood glucose and reduce insulin levels. Swimming and running are excellent cardiovascular exercises.