Are you in shape
A physical may be in order. In off season, I do a lot of aerobic excercise. Keeps the heart rate up which is what you need during a game.
I like to look at the rule changes, read the new books cover to cover and talk with others about the changes. This forum is pretty good for that most of the time. You'd be surprised the officials you work with that don't keep up with the changes, so it reinforces your understanding and you provide a service to your fellows.
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Damain
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