I need to get my blood rate up

The speaker and her husband were getting ready for their morning walk. She said, “We’ll have to walk fast so I can get my blood rate up.” This is a congruent conflation of “get my heart rate up” and “get my blood flowing”, both meaning to get active or start moving. A healthy hurrah to Beverly Rollins Sheingorn VanDerhei for saying this one and sending it in!