What is the evidence of the existence of human spirit?

Answer:
Physically, I wouldn't say there is that much evidence for the human spirit, although you may want to Google a theory called the '21 Grams Theory' it basically says that once you die you immediately lose 21 grams, which is believed to be the human spirit or soul. Other than this i would say the evidence for human spirit is best found through faith.
First answer by Elqar12345. Last edit by Elqar12345. Contributor trust: 3 [recommend contributor recommended]. Question popularity: 2 [recommend question].