ive been a competitive athlete my whole life. running, cycling, xc skiing, enduro, and now hockey. currently in the summer i typically pedal 3-5 hrs a week, and spend a day on the moto riding backwoods trails. in the winter i spend a similar amount of time on the ice, with some xc skiing as well. i have always been in better shape than almost everyone my age, but it still wears me out to build a stage, shoot/ro/reset 6 stages and tear down. part of it is also the mental fatigue of planning and visualizing each stage.
if someone is not tired at the end of a local match, i wonder if that person is actually doing their share. for sure its not as tiring as cycling the leadville100, or terrible two double century (which i have done), but its still a lot of work if you are doing your share.