But even at home, he keeps up his guard, asking to speak quietly during an interview.

Now we need to do everything we can to keep our guard up.

It's also possible he's too drunk or high to keep his guard up.

So you've just got to keep your guard up.

No one was looking for them here, but anything could happen, and it always paid to keep your guard up.

That was why they kept up their guard around him and he kept his with them.

He had to keep up his guard, remember that they were using each other.

People who go on the Internet need to keep their guard up.

He keeps his guard up at all times, but especially when his father is around.

You only look at me like I'm a woman when you're too distracted to keep your guard up.