Key points from article :
A viral animated video by BrainBridge shows a fake head transplant but raises awareness of body transplants for life extension.
Head transplants are controversial but some see them as a way to cheat death by moving your head to a new body.
Technical hurdles include reconnecting nerves and finding bodies for transplants.
Wild ideas include using genetically modified animals or even conjoined twins as body donors.
Public reaction is largely negative but some investors are interested in exploring the feasibility.
Video's creator says it's not about clicks but pushing boundaries and gauging interest.
The video project was bankrolled in part by Alex Zhavoronkov, the founder of Insilico Medicine.
