Stand on red-hot, burning coals for 30 seconds without moving
- Thick-soled footwear or multiple layers of socks can insulate against coal heat long enough to survive 30 seconds without serious injury
- Human firewalking on hot coals is a documented real-world practice; the ash layer and brief contact time make it survivable
- Thirty seconds on insulated feet is far less tissue damage than two unprotected minutes with a hot metal iron pressed directly onto a hand
