Nothing happened to His body and it did not undego any decay either since decaying happens on day 4.
This verse alone negates everything you believe about Jesus real body and the physical resurrection of Jesus as a real man with a real human body.
John 2:19-22
Jesus answered them, “Destroy this temple, and I will raise it again in three days.” 20 They replied, “It has taken forty-six years to build this temple, and you are going to raise it in three days?” 21 But the temple he had spoken of was his body. 22 After he was raised from the dead, his disciples recalled what he had said. Then they believed the scripture and the words that Jesus had spoken.
The disciples believed Him after His PHYSICAL/DEAD body was raised from the dead. The question is why don't you believe ?
hope this helps !!!