Unnecessary Fear~

So I'm on a swim team, and sometimes I don't swim every set or I don't complete it all. When I do this my coaches get really mad at me, now I'm not the only one doing this and they get mad at all of us. Than we go because they tell us to. Why do we swim when ever they tell us to. I'm curious to know because really they can't make us do anything. I mean they yell and threaten all they want but really it's not like they can force us to go or force us to swim hard. All they really can do is threaten to double they set, make us do it over again, or make it harder. But what's making us swim that either. They can't beat us or again force us physically to swim. Now granted it is scarry when they yell at us sometimes, but that's all they can do. So really we have unnecessary, irrational fear that our coachs are going to make us do what they want. So to awnser my question, there is no physical reason to fear coaches. They can't hurt you.