It can be a home gym because during free time he can do it so it can give him good results.
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.
What makes u think that? Who told u that? Ur the only person who gets to decide that for urself I’m sure ur a great person. Change your mindset !