His strength lies in his determination and perseverance.

I strengthen my muscles through regular exercise.

Regular exercise can strengthen your muscles.

My strengths lie in teamwork and problem solving.

He is stronger than his brother.

You strengthen your friendship through your common interests.

If you were to strengthen, you could achieve anything.

The strengthening food helped me feel better.

This strengthening soup is good for health.

He needs stronger coffee in the morning.