Anaerobic Respiration

• Anaerobic respiration is a process that occurs when cells break down food substances to release energy without oxygen.
•  It's less efficient than aerobic respiration, which uses oxygen, but it happens more quickly
• Lactic acid can build up in the muscles during intense exercise causing muscle fatigue and pain
• The end product of anaerobic respiration is lactic acid or ethanol (alcohol)
• Ethanol is produced by yeast fermenting sugars found in fruit juices and grains
• During exercise, anaerobic respiration can cause a build-up of lactic acid in the muscles. 
•  The body needs to oxidize this lactic acid into carbon dioxide and water, which is why you breathe deeply after exercising.