knuckle down in a sentence

Examples

1. Knuckle down and just be yourself.
2. He said he would " knuckle down " in an effort to get closer.
3. I'm just going to go out and knuckle down, play my game ."
4. Make yourself a promise today, a promise that you will knuckle down and get something done.
5. "Knuckle Down " is the big exhale after the deep inhale of " Educated Guess ."
6. Only when the good stuff was gone, says Ward, did humankind knuckle down and invent agriculture.
7. "Why should the IRA knuckle down now after all these years ? " he said.
8. "I didn't panic after losing the first set and decided I should knuckle down.
9. I really started to knuckle down about three months ago, going to the gym and working hard.
10. We have had stages when we had to knuckle down but it has been easier than I expected.