"Real" Time Travel
Another method of "real" time travel is already happening — the science of cryonics. Cryonics, more commonly known as suspended animation, is a method of cooling a living organism so that life processes such as breathing and heartbeat still occur, but at a much slower pace. The organism being suspended would not be aware that time is passing and could possibly "wake up" long after his original lifespan would have been over. While not yet tried on humans, scientists have successfully suspended and re-animated mice, dogs and pigs.