100 metres needs timing, along with show jumping and cross country.
events get timed due to competition if you were up against several people you need to know the exact times of each person in order to give them a correct place.
Reaction time is defined as the time that elapses between a stimulus and the response to it. Every sport uses reaction time. Every sport requires you to do a sitmulus and respond to it.
If you are in a race and your reaction time is slow, when you hear the starting gun-shot, you won't start on time therefore not winning.
Boxing, Athletics (sprinting) tennis, skiing, motor racing, offroading, motorcycling, all ball sports except golf and bowling, judo.
Hockey has 6 players on the ice at a time. Including the goalie. I can't think of any sport that would only have six. But hockey has six at a time.
The sport of cricket.
well I'm not really sure but i think it needs time to mix in with each other and then it will cause a chemical reaction.
baseball was the sports
Yes they do vary. It depends on what food will give you energy for what sport you are playing.
yes it is :) because it keeps you fit and healthy
Golf.
Hockey
The Kama Sutra