Interview nerves, what actually helps? - what worked for you?

It has been 10 months since my last interview and I feel rusty. I have practised answers but they sound stiff. How do you prepare answers?

Arrive early, drink water and take a slow breath before you walk in. It sounds simple but it helps.

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.