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Last episode, we explored Blue Mind — what water does to your brain from the outside. Today we go deeper. Literally.
In this episode, Dr. Meredith Calvert unpacks the neuroscience of what happens when you actually go underwater: the ancient mammalian dive reflex that slows your heart without asking permission, the breath-buoyancy feedback loop that makes scuba diving one of the most intimate nervous system practices on the planet, and why the underwater environment produces a quality of presence that's hard to find anywhere else.
We'll also do a short box breathing practice together — so you can feel the shift, not just understand it.
If you've ever surfaced from a dive feeling clearer, calmer, and more yourself — this episode is the science behind that feeling.
Mentioned in this episode:
- Want to experience Blue Mind for yourself?
I built the SeaCalm retreat around exactly this. My yoga & scuba diving retreat in is an immersive week-long experience designed to help you slow down, breathe more deeply, and reconnect with yourself, through movement, breath, and the ocean. Not just a yoga retreat, not just a dive trip. It’s a restorative prescription for Blue Mind: a full week of soft fascination, feel-good neurotransmitters, and turquoise water as far as the eye can see.
No yoga or scuba experience needed. Just curiosity, and a willingness to let the ocean do what it does best.
Find out more: https://meriyoga.org/seacalm2026
- Shrines of Science blog - Blue Mind: How the Ocean Heals
- Follow me on Instagram: @meriyogasf
Time Stamps:
01:30 - Blue mind recap
01:55 - Mammalian dive reflex
02:45 - Meditation, yoga and the switch from sympathetic to parasympathic nervous system dominance
03:20 - Scuba diving is a breath practice
03:27 - Scuba diving rule number one
03:40 - Dirga pranayama - three-part breath
04:10 - Breath and positional feedback in diving
04:40 - Proprioreception
05:00 - Underwater presence
05:15 - Practice: Dirga Pranayama - three-part breath
06:15 - Meredith's first dive
06:40 - Eagle rays and the wild within us
07:10 - Diving and directed attention restoration
07:40 - Default mode network
08:20 - Introduction to SeaCalm Yoga & Scuba retreat
09:05 - Next episode: Awe and wonder as medicine
