Cryogenic suspension was a technology used by the Terran Federation to preserve a human being over a long period of time.

Designed to slow the body functions of a human being for thirty to forty years, the cryo-capsules could keep a person for up to 150 years, but it was never tried during the age of the Federation.

Operation Ark made extensive use of cryo-capsules to transport the last eight million humans to the planet Safehold. (OAR, HFAF)