That sounds killer—like a chill‑down version of a high‑intensity interval. I’d start by keeping the heartbeat in the mix; maybe a gentle pulse that ramps up when I hit the peak of a set, then smooths out into a slow‑beat zone. Keep the visuals dynamic but not too flashy—think subtle shifts in lighting to cue my mind that it’s time to breathe. And don’t forget a quick reset button; I’ll hit that if I feel the mind racing back to “go.” That way I stay sharp, but still let the body recover. You’ve got a good idea, just tweak the vibe so it’s not all “stop, breathe” but a full sensory shift from sweat to zen.