How to Use Flicker
⚠️ Epilepsy warning! Please consult a doctor before using this tool.
Instructions
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Make one of these to put your phone in:

Take a cardboard box, and cut out a headset that fits your head. I used packing tape and scissors for mine. -
Crank the brightness all the way up.
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Go in a dark room.
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Always close your eyes when wearing the headset.
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Warning: This tool may induce seizures in people with photosensitive epilepsy.
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Visit the Flicker tool and adjust the frequency to your liking.
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You can find out what Hz your mind entrains to by trial and error!
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You can get amazing closed-eye visuals!
Cost: $0
"Many people report a sense of calm and well-being after using this tool."