Lets see...
Say you want to play judo 1,000,000 times and win every single time (I can't compute win % due to people's skillz)
If every match is 5 minutes, you have played 5,000,000 minutes, 83334 hours, 3472 days, or 9 years. (Counting leap years)
I have no idea in HELL you can play for nine years STRAIGHT, but you would need to stick to this game for your teen life just to get 1,000,000 qi.
If you love this game to the point of marrying it, go ahead, I won't stop you.