19 Or do you not know that your body is a temple of the Holy Spirit within you, whom you have from God? You are not your own, 20 for you were bought with a price. So glorify God in your body. 1 Corinthians 6:21
I just woke up to do a HIIT workout some physical therapist recommended in The Philadelphia Inquirer: a High Intensity Interval Training workout. I did 4 sets of the following: 25 push-ups, 25 jumping jacks, 25 squats, rest 1 minute. HIIT workouts seem to be the latest workout for the greatest impact.
There are certainly many reasons to workout. For me, Paul's encouragement has always been the deepest reason. My body is The Temple of Christ. Paul uses this metaphor to encourage Christians in Corinth to refrain from sexual immorality. It's principle applies to general good health, nonetheless: we should take care of our bodies because they are the dwelling places of God. Moreover, our bodies are the means by which we serve our neighbor. Making bad health choices impedes us from loving our neighbors and hinders our purpose in life.
Jesus redeems us--brings us back from death--for a purpose: to redeem our body, soul, and spirit! Let us cherish that redemption by taking care of our bodies!