The frog that freezes, then lives

Ice forms mainly outside cells. “Extracellular” means in the spaces outside them. 🧊.

The liver releases glucose into blood as freezing begins. It helps limit cell shrinkage and lowers the risk of ice forming inside cells. 🍬.

Metabolism, the body's energy use, sharply slows: breathing and heartbeat stop. Cells make energy without oxygen. That's the survival strategy. 🐸.