Be able to do something in your sleep

Pro Tip 1/3

Expert Level

Use this phrase to express a high level of skill or expertise in an activity.

She can solve complex math problems in her sleep—she's a real expert.

Pro Tip 2/3

Colloquial Use

It's informal slang, suitable for casual conversations rather than formal or professional settings.

Don't worry about the test; you've studied so much, you could do it in your sleep.

Pro Tip 3/3

Hyperbole

This phrase is an exaggeration, not to be taken literally—it's just a way of emphasizing proficiency.

I've made this recipe so many times I could do it in my sleep.