Their body temperature drops to less than 46 degrees Fahrenheit [8 ° C], their heart rate drops to between three and five beats per minute, and they breathe only two or three times per minute ​ — for marmots, this is the very limit of survival.
Suhu tubuh mereka turun hingga kurang dari delapan derajat Celsius, detak jantung mereka melambat hingga tiga sampai lima detak per menit, dan mereka bernapas hanya dua atau tiga kali per menit ​ — bagi marmut, hanya sampai begitulah kemampuan mereka untuk bertahan hidup.