This is actually a really complex question, so let's break it down.
Yawning itself isnât necessarily "good" or "bad"âit depends on what's happening in your nervous system. Yawning can be a sign that your Parasympathetic Nervous System (PNS) is kicking in, which helps bring you down from the fight or flight (Sympathetic) response.
However, there are different parts of the PNS that could be at play:
The Ventral Vagus Nerve (VVN) is linked to feelings of safety and connectionâthis is the healthy part. The Dorsal Vagus Nerve (DVN) governs rest and repair, and when it's low energy (without the perception of threat), itâs also healthy. So, if these are the parts coming online, your yawning is a sign of your body moving into a calm, safe state, which is great!
But here's where it gets tricky: the DVN also governs the freeze response when thereâs a lot of energy going to that system (high-scale inaction with the perception of threat). This can also cause yawning, but itâs not a good signâit means your system is shutting down, which is a last-resort survival mechanism.
Unfortunately, many of us have learned to go into freeze as a default in times of stress, and this can show up as uncontrollable yawning, along with feelings of numbness, dissociation, or spacey-ness.
So, if you're yawning and feeling relaxed, calm, and at ease, thatâs a sign of healthy nervous system regulation. But if youâre yawning uncontrollably and feeling disconnected, heavy, or foggy, it could be a sign that you're heading into freeze, and thatâs something to be aware of.
You can tell the difference by noticing how you feel. If you're feeling tired but generally okay, that's likely just exhaustion. If you're feeling numb, spaced out, or lethargic, that's more likely to be freeze.