Do you have to be incredibly book smart to graduate the medical portion?

Training
Written By Brian S

You do not have to be extremely intelligent, just be dedicated and put in the time to study. It’s doable.

Brian S
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I’m having issues with buddy breathing and getting water out of the snorkel and staying calm, how should I practice this? Also I have an issue with staying calm with goggles off.
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Any tips on how to increase lung capacity or how to fight the urge to breathe?