Cryonics (cryopreservation or cryo freezing) is the last resort for the dead and dying to save their lives, albeit in the hope of returning to life sometime in the future. For this, after special procedures (perfusion and vitrification), the clinically and legally dead patient is immersed into a low-temperature medium where almost all chemical reactions are stopped. The first cryopatient, an American professor James Bedford, has been cryopreserved for almost 50 years with no sign of change or deterioration.