Push a stream of air from your throat through your open mouth. No tongue or lip contact.

Americans pronounce hay as HAY (/heɪ/). You'll hear it in sentences like "The barn stores hay for the animals to eat during winter".
Record yourself saying "hay" and play it back. The mic stays on your device — nothing's uploaded.
1 syllable, 2 sounds. Explore each sound's mouth shape and how it's made.