The cells would consume more energy, so you'd need more food, so in conditions o...

		PeterisP on March 21, 2020 \| parent \| context \| favorite \| on: If the heart is a muscle, why doesn't it ever get ... The cells would consume more energy, so you'd need more food, so in conditions of food scarcity (i.e. 99% of our [pre]history) you would be at a severe disadvantage as your tribe would starve to death in conditions when more efficient homo sapiens would still survive.

Also require more oxygen and produce more heat.