Parent is suggesting that sleeping must be good on the macro level. That does imply that it must also be good for the animal, right? In order to statistically benefit the population, the benefits to any given animal must statistically outweigh the costs. It can’t be all bad for all animals and still be good for the whole.
But sleep can be partially bad for some animals, they can be more prone to becoming prey while sleeping (though Google tells me sleep also prevents nighttime activity where predators have the advantage). There are definitely evolutionary adaptations around sleep to make it safer, sleeping in trees, sleep patterns & duration, hypnic jerk, etc.
But sleep can be partially bad for some animals, they can be more prone to becoming prey while sleeping (though Google tells me sleep also prevents nighttime activity where predators have the advantage). There are definitely evolutionary adaptations around sleep to make it safer, sleeping in trees, sleep patterns & duration, hypnic jerk, etc.