In 1 Corinthians 6:19-20, it states clearly that our body (that God has given to us), is the temple of God. The apostle Paul stresses that the body we are residing in is not the outer courts of the temple, but it is the Holy of Holies, where the priests in the old testaments can only enter once a year!
Remember, we are not our own - we are the stewards of this body. We need to learn to manage our bodies the best way we can. Moreover, we are bought with a price (2 Cor 8:9); not just in the spirit, but our physical body too.
We need to focus on glorifying and honoring God with the way we are treating our body.