We are Spirit, Soul, and Body. Since our bodies contain our spirits then it stands to reason that we should take care of ourselves in order to live a healthy life for the sake of serving the Lord. Many people seem to believe or imply that exercise is somehow not "spiritual", that it is rather carnal or has no eternal value.
I want to challenge you in this article to rethink your views. It is not sinful to exercise. I understand that we can become obsessed with trying to look good at the expense of being and doing the things that are worthy of our time and attention both now and throughout eternity but exercise in and of itself is certainly not sinful. I want to remind you that the Apostle Paul referred to "running the race …". He also used fighting (boxing) to illustrate a point. I Timothy 4: 8 says, "For bodily exercise profits little, but godliness is profitable unto all things, having promise of the life which now is and of that which is to come." Many have taught I Timothy 4: 8 out of context. They teach that bodily exercise is not profitable at all. However, this verse says that it does profit a little. This phrase should not go unnoticed. There is some profit in bodily exercise.
You see, if we are sick, run down, out of shape, and tired this can be a huge distraction to serving the Lord. On the other hand, when we take care of ourselves we are generally more energetic and capable of serving the Lord without distraction. I do believe that being strong and healthy spiritually is more important though just as the verse referred to says that godliness is profitable both now in this life and in that which is to come (eternity). But let's not "through the baby out with the bath water" so to speak.
I believe in divine healing but I also believe that if we engaged in more divine living we would not need so much divine healing. Divine healing should only be necessary as a last resort.
I have determined to take care of my body because my body is what contains my spirit. I believe that christians are guilty of gluttony more so than any other addiction. Food is not sin; overeating or gluttony is. God put food on this earth to enjoy and nourish us, not to worship. A highly recommend the I short, inexpensive book about nutrition with a spiritual Other Emphasis titled, What with In The World Post Are You Eating? It has received a five-star rating and has helped several people lose weight, maintain weight, and just be stronger in spirit, soul, and body.