Is DSIP (Delta Sleep Inducing Peptide) better absorbed orally or sublingually? You are sleeping eight hours and waking up exhausted. The problem is not how long you are sleeping. It is what your body is doing while you are asleep. Most people know You're exhausted but still can't fully wind down? Getting sleep at night but waking up not feeling rested? That's exactly why DSIP keeps coming up in sleep and recovery conversations. I made Dr. Richman on DSIP: The Enigmatic Sleep Peptide