a lot
Because it takes that long to get the venue ready and for participating countries to train their teams.
Well it all depends. Because if you are a good athelete then you don't have to train for so long
Well the years beetween the olyimpics ending and starting is when they train
About 2 to 3 years.
They train either trained for a long time, a normal amount of time or for a sort time. I forgot.
3-4 hours a day
they train long and hard for many months to even years.
They have to train 3 years because the Olympics are every 4 years.
every dog is different, but they usually train quite fast
BOXERS
Boxers train really hard. Depends what kind of fighter you are. you can be bad, alright, good, great, or legends like the Mayweather's and Pacquiao's out there. The way you train defines what kind of fighter you will become. Also what type of trainning you do, such as sparring, roadwork, strength and conditioning and manny more tranning tecniques that apply to what type of trainning you do.
Modern Olympians train for about 4 years, from the last to the next Olympic games Ancient Olympians train for at least ten months, and had to swear in front of a statue of Zeus that they had been in training for at least ten months.