![Layered Figure 14.8, Page 1 A graph depicts the changes in body temperature and metabolic rate during rest-phase torpor. The temperature remains constant in the initial phase at the normothermic set point, then falls to the new set point, remains constant for a certain time period, then rises and again remains constant. The metabolic rate remains constant at the initial phase, then falls to a point behind the new set point, remains constant for a certain time period, and then rises to form a sinusoidal wave-like pattern that is marked as the energy cost of arousal.](/static/61d666826983cd001dc47997/carousel/layered vl11e_14.08 torpor_layer 01.png)
Figure 14.8 Changes in body temperature and metabolic rate during rest-phase torpor. As an animal enters restphase torpor, a decrease in metabolic rate precedes a fall in body temperature to a new set point. On rewarming, an increase in metabolism precedes the return to normothermia. The metabolic rate during arousal briefly overshoots the resting rate, but the energy cost of arousal is less than the energy saved by the period of torpor.
![Layered Figure 14.8, Page 2 A graph depicts the changes in body temperature and metabolic rate during rest-phase torpor. The temperature remains constant in the initial phase at the normothermic set point, then falls to the new set point, remains constant for a certain time period, then rises and again remains constant. The metabolic rate remains constant at the initial phase, then falls to a point behind the new set point, remains constant for a certain time period, and then rises to form a sinusoidal wave-like pattern that is marked as the energy cost of arousal.](/static/61d666826983cd001dc47997/carousel/layered vl11e_14.08 torpor_layer 02.png)
Figure 14.8 Changes in body temperature and metabolic rate during rest-phase torpor. As an animal enters restphase torpor, a decrease in metabolic rate precedes a fall in body temperature to a new set point. On rewarming, an increase in metabolism precedes the return to normothermia. The metabolic rate during arousal briefly overshoots the resting rate, but the energy cost of arousal is less than the energy saved by the period of torpor.
![Layered Figure 14.8, Page 3 A graph depicts the changes in body temperature and metabolic rate during rest-phase torpor. The temperature remains constant in the initial phase at the normothermic set point, then falls to the new set point, remains constant for a certain time period, then rises and again remains constant. The metabolic rate remains constant at the initial phase, then falls to a point behind the new set point, remains constant for a certain time period, and then rises to form a sinusoidal wave-like pattern that is marked as the energy cost of arousal.](/static/61d666826983cd001dc47997/carousel/layered vl11e_14.08 torpor_layer 03.png)
Figure 14.8 Changes in body temperature and metabolic rate during rest-phase torpor. As an animal enters restphase torpor, a decrease in metabolic rate precedes a fall in body temperature to a new set point. On rewarming, an increase in metabolism precedes the return to normothermia. The metabolic rate during arousal briefly overshoots the resting rate, but the energy cost of arousal is less than the energy saved by the period of torpor.
![Layered Figure 14.8, Page 4 A graph depicts the changes in body temperature and metabolic rate during rest-phase torpor. The temperature remains constant in the initial phase at the normothermic set point, then falls to the new set point, remains constant for a certain time period, then rises and again remains constant. The metabolic rate remains constant at the initial phase, then falls to a point behind the new set point, remains constant for a certain time period, and then rises to form a sinusoidal wave-like pattern that is marked as the energy cost of arousal.](/static/61d666826983cd001dc47997/carousel/layered vl11e_14.08 torpor_layer 04.png)
Figure 14.8 Changes in body temperature and metabolic rate during rest-phase torpor. As an animal enters restphase torpor, a decrease in metabolic rate precedes a fall in body temperature to a new set point. On rewarming, an increase in metabolism precedes the return to normothermia. The metabolic rate during arousal briefly overshoots the resting rate, but the energy cost of arousal is less than the energy saved by the period of torpor.
![Layered Figure 14.8, Page 5 A graph depicts the changes in body temperature and metabolic rate during rest-phase torpor. The temperature remains constant in the initial phase at the normothermic set point, then falls to the new set point, remains constant for a certain time period, then rises and again remains constant. The metabolic rate remains constant at the initial phase, then falls to a point behind the new set point, remains constant for a certain time period, and then rises to form a sinusoidal wave-like pattern that is marked as the energy cost of arousal.](/static/61d666826983cd001dc47997/carousel/layered vl11e_14.08 torpor_layer 05.png)
Figure 14.8 Changes in body temperature and metabolic rate during rest-phase torpor. As an animal enters restphase torpor, a decrease in metabolic rate precedes a fall in body temperature to a new set point. On rewarming, an increase in metabolism precedes the return to normothermia. The metabolic rate during arousal briefly overshoots the resting rate, but the energy cost of arousal is less than the energy saved by the period of torpor.