Essentrics is about flowing motions, but it is very different from flow yoga (also known as Vinyasa). Yoga, including flow yoga, is about still poses, while Essentrics is about movements. In yoga, you stretch while holding a pose - a form of static stretch. In Essentrics, however, you stretch as you move. Essentrics is therefore about dynamic stretching.
There are certainly a lot of movements in flow yoga. You are moving through successive poses at a faster pace compared to, say, Hatha yoga. But in both cases the stretch happens when you are still, after you get to a pose, NOT when you are moving between positions.
In other words, despite the more frequent movements and poses, flow yoga remains similar to other types of yoga. They are about static stretch. In Essentrics, however, you stretch WHILE you are moving. The stretches are dynamic.
Consider the names in yoga: tree, half moon, down dog, cobra, warrior. These are nouns to describe still poses. Now consider the names in Essentrics: push a piano, pull a donkey, wash a window, remove a sweater, rock the baby, wiping air, embrace a ball... They use verbs to describe movements. You stretch your arms and back muscles when you remove a sweater. That is stretching-in-motion.
Why is the distinction between static and dynamic stretch important? Aren't stretches all similar at the end of the day? There are some benefits to static stretch, such as pain relief. Yet it doesn't improve long-term flexibility if you have strengthened your muscles by compressing or shortening them, such as lifting weights. These types of "concentric" workouts shorten the muscle fibers and give you a buff look. When you do static stretch after you might feel less tight. Yet the moment you stop your static stretch your muscles shorten to its previous length. Your muscle flexibility remains compromised from doing those bicep curls and crunches. You will be buff but stiff.
On the other hand, if you strengthen your muscles while stretching them, you are enhancing both power and flexibility. This form of training is "eccentric" - the opposite of concentric. It is what we do in Essentrics - hence the name! This method improves long term flexibility and strength at the same time. This is why the distinction between static and dynamic stretch is important, and knowing the difference can help you achieve your desired results!