This experience was created when I saw a need to physicalize the receiving action in a group ball game exercise. I repeatedly noticed some students having difficulty receiving the ball without blocking the energy of the ball. Invite flow was created to help students practice receiving without blocking. 
Then I noticed that Invite Flow helps make space for an incoming breath- as opposed to "grabbing" or "taking" inspiration. It also serves to gain knowledge about the breath cycle. When do I breath in? When do I breath out?
And simply, Invite Flow can help relieve tension.