• Heart Problems: This is very rare, but someone may develop heart trouble during exercise, or even die suddenly, but chest pain or heart palpitations should never be ignored during exercise
  
  
 
•   Exercising too much may result in strained ligaments, muscles, and joints
  
  
 
•   Heat exhaustion
  
   
 
•   Dehydration
  
   
 
•   For women they may have complete loss of menstruation, which may lead to osteoporosis
 

While exercise has so many benefits to the risks: there is such a thing as too much of a good thing. 
Losing weight is a nice boost, but when you want more and more, it can get ahead of you and lead to eating disorders such as anorexia.

Risks of Anorexia

(reference B)

• Dehydration

• Malnutrition

• Heart Damage

• Liver Damage

• Infertility

• Personality Changes

• Kidney Damage

• Osteoporosis

• Damage to the immune system

• Starvation

• Permanent health damage

• Death