“Whatever you do, do it all for the glory of God.” 1 Corinthians 10:31 (NIV) (see also Colossians 3:17, 23)
Sloth is another of the Seven Deadly Sins. Isn’t that interesting? Being lazy and failing to exercise our bodies was classified a sin in early Christian times. Try telling that to our culture today! But it is true, failing to care for our bodies is poor stewardship. And exercise can be a form or worship — it’s just that our hearts and minds and intentions have to be in the right place.
1) God asks that whatever we do, we do as unto Him. That includes our time at the gym. So when you are working out, be all there. Give 110%! Hold nothing back. Give what you have at that moment (not more, but not less either). Jesus gave it all for us, so give your all for Him at each workout session.
2) Set reasonable and realistic goals for your workouts, then don’t give up. This does not mean to abuse yourself. First of all, the goals you make are to be reasonable goals (given your current fitness level, amount of sleep or sleep deprivation you are operating on, etc.). Secondly, never giving up does not mean refusing to listen to your body. You can do both. For example, your goal was to run 3 miles but halfway through you don’t think you can make it. Instead of quitting, slow down or even walk for a little while if you have to, but don’t quit. Listen to and honor your body, but don’t quit. Jesus doesn’t quit on you, so don’t quit on Him.
3) Give your workout to God. Give it to Him for His pleasure and for Him to use as He will. Forget about vanity and the results you desire; trust Him with the outcomes. For when we workout as unto the Lord and take care of this amazing body He has given us, we honor Him.