Quick Answer. In an officially-sanctioned MLB baseball game, there are 9 innings. If the home team is ahead in the top of the ninth and earns 3 outs, the game ends at 8 1/2 innings. If the game is tied after the away team earns 3 outs in the bottom of the ninth, the game goes into extra innings. Keep Learning.
When you exercise, the muscles you use require more energy. When exercise can be sustained, this demand is met primarily by aerobic means. Aerobic energy production in muscles results in increased gas exchange at the lungs, because more oxygen is taken in and more carbon dioxide is released.
Short term effects. During exercise, the body needs a supply of oxygen to release energy in the muscles. Respiration increases to provide that oxygen and remove carbon dioxide. This is done by: 1  increasing breathing rate by about three times the normal rate.2  increasing tidal volume by five times the normal rate.hort term effects. During exercise, the body needs a supply of oxygen to release energy in the muscles. Respiration increases to provide that oxygen and remove carbon dioxide. This is done by: 1  increasing breathing rate by about three times the normal rate.