Exercise is valuable and good for us....
1 Timothy 4:8
For g bodily exercise profits a little, but godliness is profitable for all things, h having promise of the life that now is and of that which is to come
1 Corinthians 6:19-20
19Or t do you not know that your body is the temple of the Holy Spirit who is in you, whom you have from God, u and you are not your own?20For v you were bought at a price; therefore glorify God in your body 1 and in your spirit, which are God's.
Vanity is not....
1 Samuel 6:7
But the LORD said to Samuel, k "Do not look at his appearance or at his physical stature, because I have 3 refused him. l For 4 the LORD does not see as man sees; for man mlooks at the outward appearance, but the LORD looks at the n heart."
Proverbs 31:30
Charm is deceitful and beauty is passing,
But a woman who fears the LORD, she shall be praised.