How to stay calm/not let nerves get to you before the exam?

Testing fairly soon, but I wanted to ask the community about the best ways to not let nerves and anxiety get the best of you in the days leading up to the test AND during the exam. The last thing I want is for me to score lower than my FL average or significantly worse than expected just because I let my head get the best of me. Any tips and advice are always appreciated.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: MCAT: Medical College Admissions Test Source Type: forums