Answer: The liver.. :
Your liver is your body's largest solid organ. On average, it weighs around 3 pounds in adulthood and is roughly the size of a football. This organ is vital to the body's metabolic functions and immune system. Without a functioning liver, a person cannot survive.
Explanation: Pretty cool if you ask me.
Yes, depending on the perspective. If it's going to be because they want you to, than no. If it's going to be a continuous thing to lose weight, get in shape, etc, than yes.
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