In the Rio Grande Valley, "drink more water" is advice almost everyone has heard and almost everyone still gets wrong. Not because people aren't trying, but because the advice is too generic to be useful once you factor in 100-degree summers, a workout, or just an unusually demanding day. How much fluid your body actually needs isn't a fixed number. It's a moving target based on your activity, the temperature, your overall health, and how much you personally sweat.

If "nervous system regulation" feels like a phrase you've suddenly started seeing everywhere social media, podcasts, wellness spaces you're not imagining it.

Cold plunge, infrared sauna, red light therapy, and compression work all built their reputations in locker rooms. But the underlying research isn't sport-specific it's about how the body manages stress, inflammation, and recovery cycles, full stop.

Here's the physiology, in plain terms — and what that means for how (and why) we structure cold plunge sessions at Onyx Recovery.