TL;DR: This story is not going to get enough karma to justify me writing it. I suggest reading it in the voice of Dwight Schrute. (Also I didn't want Reddit to enbiggen this, but it happens automatically when you bold it.)

Here's what you do: you go to the gym a few times to scout him out, find out when he's doing what and where. You write your will and give it to your best friend. You instruct him not to open it before you die or fall into a coma and not to question what you ask of him.

One day you go in and challenge him to a fight while he's busy. He drops whatever he's holding and punches you in the face. You fall down, unconscious.

The ambulance arrives, you're taken to the hospital. There you wake up. They give you pain medication. You convince them that you're not hurt. You go home. A few days later, while driving a car, bam, you have an accident. You fall into a coma. They find a card saying they need to call your friend if that happens.

He arrives in your room at the hospital. He stays overnight. You have instructed him to give you a drug that will make it look like you've died for 48 hours. He makes you take it during the night. The doctors come, they think you died.

The next day, they bury you. You've given to your friend the exact instructions about how the funeral should go. You're buried very close to the surface. Unbeknownst to everyone but you two, your coffin has 48 hours of oxygen in it.

Meanwhile the trial of the gym leader has started. The doctors have determined that your accident was caused by a concussion provoked by his punch.

The following night, at 3 a.m., you get out of the grave. Your friend is waiting for you with his brother's ID, a costume, and plane tickets to Morocco. He takes you to the airport. Disguised as his brother, you board the plane and build a new life in Morocco.

A year later the gym leader is sent to jail and as a sign of good faith, gave half a million dollar to your mother, hoping to fix her life as much as he could, as instructed by his lawyer. That lawyer is your half-brother, your father's illegitimate son. Nobody knows you are related. He contacts you. You've sent him your new address. He was in on it all along.

He arranges it so that you receive the money. You tell him to come and meet you in Germany. You know he's always loved that country.

You don't come. You go to Switzerland. Before your funeral, you had arranged for your coffin to be sold by your cousin. It was lined with gold and over 300 years old. The profit of the sale was sent directly to an account you had opened in Morocco 2 weeks prior. He doesn't know it was sold for 5 million dollars.

You are rich and the man who punched you is rotting in jail. You won the fight.