yes, I’ve heard about it, search on it on this forum and you will get topics like Uberman sleep schedule among others.
But looking at your age and since you are only 14
You should not try it since your body is still growing and might need sleep for that.
You shouldn’t try polyphasic sleep until you are 18 atleast.
[mod]links My polyphasic sleeping journey
Uberman Sleep Schedule - You only need two hours of sleep
I will lock this topic now 
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