How do sports drinks affect athletes?

• Why do we even need sports drinks? Why are they any better than water?
  
  
• Why are these elements important?
  
  
  • Water
    
    
  • Carbohydrates
    
    
  • Electrolytes
    
    
• How does the body produce energy?
  
  
  • Glycolysis
    
    
  • Krebs Cycle
    
    
• What are the differences between different sports drinks?
  
  
• Bibliography