nail down (someone or something)
to make certain or sure of something
I am trying to nail down the exact time that the meeting will begin.
Benefits of Jalapeno
Jalapenos rich in capsaicin
Jalapenos rich in capsaicin are also packed with healing properties. If you eat enough jalapenos, you may be able to keep your blood pressure under check. It is also great for cardiac health and can keep your heart fit. Jalapenos are believed to help in weight loss and can prevent the formation of blood clots.