I'll be following this five min routine every day which according to Jeff, guarantees a 50% increase in my max number of pull ups.

Day one test I could do 13 pull ups. Followed by another 20 over 5 minutes after a 2 min break.

Resolves yes if I do 20 pull ups without a break at any point before 25th June. No otherwise.

I will only bet yes in this market. Bet no and allow me the pleasure of proving you wrong.