What are the best stretches to get the blood flowing?

Heinz-walter Pfeil
It helps me to think “head to toes”. I start by stretching my neck (rotations and placing a hand on my opposite ear to help stretch my neck side-to-side). I’ve printed off these 5 stretches from a Self Magazine article. They are simple & only 5 to remember. https://www.self.com/gallery/5-simple-stretches-that-release-tension-in-your-neck-back-and-legs/amp

Maëly David
I tend to do stretching for my lower body. But what really works on blood flowing is 1) stretch the back, get my head below the waist line and up, slowly.