I occasionally have used natural psychedelic drugs for spiritual and scientific purposes (I do not abuse them and I treat them with the utmost respect), and have found that on several of these occasions my sense of time became severely distorted and disconnected. On the first of these occasions the effects of the drug lasted around 14 hours. However, during these 14 hours I experienced a passage of time that I believed to be roughly a two year period. On the second occasion I had asked a friend the time and he told me it was 6:15. I waited awhile and asked him again to the reply of 6:00. There has been much talk lately of the potential for elongating our lives through biological altercation. But after having had these experiences I am led to wonder if perhaps the key to living a "longer" life is in the way we perceive the passage of time itself. If there were a way to be "more conscious" within each passing second so as to sort of prolong it, we would essentially be living longer (even though biologically we would still die at the same age). This is very strange, and although I haven't fully wrapped my mind around it yet, I can honestly say that I did live two years within that 14 hour period. Which leads me to wonder if there is any potential for developing a substance from these drugs (without the severe sensory alteration) that could allow an individual to attain this state indefinitely? Also, is it possible to exercise your brain in such a way as to develop the ability to process more sensory input in a given amount of time than you do regularly? Any thoughts or similar experiences?