Exercise - my husband says that's a bad word. However, we need exercise in our lives to maintain good health.
Body
We need physical exercise to obtain optimal use of our bodies. The Bible describes our bodies as the temple of God. Our bodies are the only one we have here on earth. To be able to accomplish everything God would have us to, our bodies must be in shape. We shouldn't ignore taking care of ourselves through eating properly and staying fit.
Mind
We need to exercise our minds as well. Our lives should involve continual learning to keep our brains sharp. Some studies have shown that reading and working puzzles - stimulating the mind - could stave off dementias.
Spirit
The spirit needs exercise as well to stay healthy. Reading the Word of God and memorizing verses and passages boosts our relationship with the Lord and prepares us for situations we might face. Prayer increases the "trust muscle" keeping us in line with God's will for our lives.

Mark 12:30 says: "Love the Lord your God with all your heart and with all your soul and with all your mind and with all your strength." With all of our being we prove we love the Lord. To do so, we might need to cut some flab and whip some areas into shape. Have you logged any exercise today?