Jesus' tomb was empty.......His flesh and blood put on immortality and inherited the Kingdom of God. We shall do the same.....our flesh and blood shall be changed in the twinkling of an eye. I don't have to understand the science of it but, I do know our physical bodies will die as seeds and a new body will come forth from the ground just like Jesus did.
Resurrection is only of the spirit, blood/flesh and bones must go back to the earth which shall pass away eventually.
You do not know what it means to have life in abundance, it means that death can not overcome you, not for a millisecond. Believers will follow the example of Jesus and Jesus did not resurrect (spiritually) after 3 days but immediately after His death (many have missed that point in the scriptures). The 3 days and 3 nights thing was to fulfill prophesy but also for the purpose of the gospel. It was the sign of Jonah for a perverse generation and how was the gospel to be preached that Jesus died and resurrected if people could confirm that the body is still in the grave?
Matt 27:50When Jesus had cried out again in a loud voice, He yielded up His spirit. 51At that moment the veil of the temple was torn in two from top to bottom. The earth quaked and the rocks were split. 52The tombs broke open, and the bodies of many saints who had fallen asleep were raised. 53After Jesus’ resurrection, when they had come out of the tombs, they entered the holy city and appeared to many people.