1 Samuel 16:7 But the Lord said to Samuel, “Do not look at his appearance or at his physical stature, because I have refused him. For the Lord does not see as man sees; for man looks at the outward appearance, but the Lord looks at the heart.”
When Samuel was called to visit the house of Jesse to anoint the next King he looked at the brothers of David and saw good strong men just like Saul.
God does not require the six-pack or the muscles popping out. God requires a heart dedicated to serving Him.
It is how we use what God has given us that counts; not how much we have exercised or managed to build up for ourselves.
God looks at our potential based on what we have inside of us. God plans for the future realm which is spiritual and not just for the physical realm of now.