Review of energefics Endotherms and ectotherms Endotherms and

Review of energefics Endotherms and ectotherms Endotherms and

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Brown adipose tissue (BAT; brown fat) has cells that are
packed with mitochondria that are specially adapted for heat
production. As blood flows through the tissue, it is warmed
significantly, allowing the tissues to warm.
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Ectotherms – especially vertebrate
endotherms – are ‘sprinters’: they are
not endurance athletes. They cannot
sustain intense activity. So, no flying,
no long-distance running, etc.
Endotherms can do both sprint and
endurance exercise.
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“Regular” marathon: 42 km (26.2 miles)
Badwater
Ultramarathon
•! Badwater in Death Valley (-280
feet) to Mt. Whitney Portal (8,000
feet)
•! 216 km (135 miles)
•! held in July (when Death Valley
temperatures are 115-125 °F)
•! run NON-STOP!
“Regular” marathon: 42 km (26.2 miles)
Badwater
Ultramarathon
•! Badwater in Death Valley (-280
feet) to Mt. Whitney Portal (8,000
feet)
•! 216 km (135 miles)
•! held in July (when Death Valley
temperatures are 115-125 °F)
•! run NON-STOP!
L#"*5+"!$#$%&'!02.+.!
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This •!requires
making and using about
•! S-$6!,#!I(+1-$+$.J!;(<25+!^!6*$.!OAr!,#!.2*$!?$%'!(06?$!.*(--!
200 kilograms
of ATP per day!
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