What did they do to john coffey in the green mile to make him so big?

In "The Green Mile," John Coffey is portrayed as a large, physically imposing man, but his size is not attributed to any specific action taken against him. Instead, his immense stature and strength are intrinsic to his character, symbolizing his physical and emotional burden. The narrative suggests that his size and abilities stem from his unique, supernatural gift, which allows him to heal others and absorb their pain, rather than any external manipulation.