Training methods to build pain tolerance

[Incel]

hold breath while walking, try to hold longer and longer

take freezing cold shower without complaining or moving out of cold water

turn the water to hottest possible and use it to wash hands or just let it run over hands

turn on gas burner stove if u have one, or stove and place hands inside, let the heat 

punch hard objects, kick the swingset pole

I do all these things and it works I never feel fatigue or pain now