What numeric sequence does Speaker B say in this excerpt?

Niraj NaikFounder & CEO of SOMA Breath | Music-Powered Breathwork Pioneer | DJ, Speaker & Author

Powerful Breathing Techniques To Relieve Anxiety | Niraj Naik | SOMA Breath®️

12 May 2023 · 0 min

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0:06

Niraj Naik teaches breathing techniques to lower anxiety and heart rate. He emphasizes exhaling slowly, as if breathing through a straw, and shows how to pair slow exhalation with humming. A second speaker counts down numbers that track the heart rate dropping.

Questions this video answers

"67, 66, 58, 57, 56, 54."

Another way you can lower the heart rate is to exhale very slowly, like you're breathing out through a straw. I'll show you.
67, 66, 58, 57, 56, 54.
Exhaling very slowly and then holding a breath. What other times do we exhale very slowly? Especially in our slow and breath method. It's the humming.
So you see, it just keeps going down. So humming is really beneficial for lowering the heart rate, lowering blood pressure, calming you down.