Change your body temperature. Your body drops in temperature as you drift off into sleep.

你的体温在你入睡的过程中会慢慢降低。

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While sleeping, their body temperature drops and their heartbeat slows down.

睡觉时，它们的体温下降，心跳减慢。

youdao

While sleeping, their body temperature drops and their heart beat slows down.

睡觉时，他们的体温下降，心跳减慢。

youdao

In that situation, their body temperature drops below thirty-five degrees Celsius.

VOA: special.2009.12.30

Statistics show only a 10-33% survival rate for adults whose core body temperature drops below 28degC.

BBC: Skier revived from clinical death

The ability of the tissue to absorb lipids and keep the rest of the body safe thus drops.

ECONOMIST: Metabolic syndrome

When the body's core temperature drops below 95 degrees Fahrenheit, a mild form of hypothermia takes hold.

FORBES: Magazine Article