I read this on Doug Phillips' blog yesterday.
I love having a focused exercise program. It requires goal-setting, perseverance, great effort and pain. But it also produces joy, blessings and tangible benefits. That is why I sometimes think of exercise as a physical metaphor for the victorious life of Christ. Pushing our bodies reminds me that it is worth fighting hard to see the greatest goals realized. We need to fight hard and hold fast, even as we wholeheartedly “wait upon the Lord.” This waiting on the Lord is critical. It requires faith and hope. It means fighting hard and holding fast to the things we know to be true, as we wait upon the Lord. But there is a wonderful conclusion to the story:
But they that wait upon the LORD shall renew their strength; they shall mount up with wings as eagles; they shall run, and not be weary; and they shall walk, and not faint. Isaiah 40:31