What are some examples you are thinking here? Not caring at all body language. Bad ump call body language. My defense just made 3 errors in a row so please get your sh#t together because this inning has now gone on for 15-20 minutes body language. I can't throw a strike to save my life, coach please pull me body language.
The easy answer is absolutely it can. But I also think situations will elicit some type of human response, good or bad. Not everyone has the ability to be cool, calm and collected.
Do you think a pitcher's body language can affect the whole team? How does a coach handle a pitcher with bad body language?
Find out if any university in your area has a Sports Psych program .....
This will be one of the best investments you can make into your team, and the lessons translate into every day life too.