The phrase in the subject line is what chinstrap penguins must be saying regularly -- literally all the time.
This penguin survives on 4-second microsleeps — thousands of times a day
(That's the link to the actual paper, which you would have to pay for.)Here's a popular science summary:
“Sleep in breeding chinstrap penguins was highly fragmented under all conditions and positions on land,” researchers wrote in the paper, published in the journal Science. The findings suggest “microsleeps can fulfil at least some of the restorative functions of sleep”. The penguins studied could sleep standing up or lying down."
This one's lying down. Might even be sleeping for a minute or two.
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