Reincarnation is something you may or may not believe in.
I was raised with the word of God as one parent was Christian and the other Muslim.
Through high-school I learned so much scientific things that I started only believing in what science could prove or that sounded logical. In my free time I was mostly reading scientific magazines and Stephen Hawking's books.
I stopped believing in God and with that in all that was not accepted by the mainstream science community.
And then around the age of 32 I started to have new experiences that could not be explained by mainstream science :-)
The just before turning 40 i started to have flashbacks of previous lives. And NO, I was not on any drugs or consuming alcohol. Inf fact I was not always alone and those around me could finish describing my flashbacks.