If you play a contact sport with a high risk of head injury - volunteer as a participant with neuroscience research

They'll likely perform an MRI of your brain for free, and when/if you receive a head injury the neurosurgeon/specialist will actually have something to compare it to.
This could also likely help in work compensation cases to prove an injury wasn't pre-existing. You will also help out various aspects of research and assist in fast tracking volunteer requirements for research in neuroscience. Its a win-win situation and they may even cover travel costs.
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LPT :: Life Pro Tips