the OP is merely speculation & must rely on modern science for an explanation
there is actually not one shred of evidence from the Bible that he actually died
John's account does not prove he died
there is more evidence in the Bible he did not die
keep in mind, there was the Centurion who was his indebted follower
from Mark:
It was Preparation Day (that is, the day before the Sabbath). So as evening approached, Joseph of Arimathea, a prominent member of the Council, who was himself waiting for the kingdom of God, went boldly to Pilate and asked for Jesus’ body. Pilate was surprised to hear that he was already dead. Summoning the centurion, he asked him if Jesus had already died. When he learned from the centurion that it was so, he gave the body to Joseph. So Joseph bought some linen cloth, took down the body, wrapped it in the linen, and placed it in a tomb cut out of rock. Then he rolled a stone against the entrance of the tomb. Mary Magdalene and Mary the mother of Joseph saw where he was laid.
more:
4.John 19:38 Later, Joseph of Arimathea asked Pilate for the body of Jesus. Now Joseph was a disciple of Jesus, but secretly because he feared the Jewish leaders. With Pilate’s permission, he came and took the body away.
Matthew 27:19
While Pilate was sitting on the judge's seat, his wife sent him this message: "Don't have anything to do with that innocent man, for I have suffered a great deal today in a dream because of him."
