Sleeping standing up might not be for humans, but for certain animals it could be life-saving <\/p>
In order to sleep while standing up, you need legs that can be aligned vertically, so you don\u2019t need to use muscular effort to keep them straight. You also need knees that \u2018lock\u2019 in place.<\/span><\/p>\n Sleeping upright is advantageous for large animals that would be slow to lumber to their feet if attacked. If they are already standing it means they can flee quickly from a potential predator. For smaller animals, the reduction in leg springiness outweighs this benefit.<\/span><\/p>\n Often these herds will also have one member who serves as a look out and can raise the alarm.<\/p>\n <\/p><\/div> <\/section> Horses, bison, zebras<\/a> and elephants<\/a><\/strong> sleep standing up. Cows can too, but mostly choose to lie down. Giraffes<\/a><\/strong> also sleep standing up, but only for short periods of time.\u00a0<\/span><\/p>\n Some birds also sleep standing up. Many birds roost in trees at night using an arrangement of their leg tendons that causes their body weight to pull the claw shut around the branch. Whether this counts as standing up is a matter of semantics.<\/span><\/p> <\/body><\/html>\n Sleeping standing up might not be for humans, but for certain animals it could be life-saving <\/p>\n","protected":false},"author":24,"featured_media":25969,"template":"","categories":[1],"acf":{"readingTimeMinutes":"2"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/03\/what-animals-sleep-standing-up.jpg",2121,1414,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/03\/what-animals-sleep-standing-up-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/03\/what-animals-sleep-standing-up-300x200.jpg",300,200,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/03\/what-animals-sleep-standing-up-768x512.jpg",768,512,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/03\/what-animals-sleep-standing-up-1024x683.jpg",800,534,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/03\/what-animals-sleep-standing-up-1536x1024.jpg",1536,1024,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/03\/what-animals-sleep-standing-up-2048x1365.jpg",2048,1365,true]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcwildlife\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"Sleeping standing up might not be for humans, but for certain animals it could be life-saving","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/rss_feed\/25968"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/media\/25969"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/media?parent=25968"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/categories?post=25968"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Why do some animals sleep standing up?<\/h2>\n
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What animals sleep standing up?<\/h2>\n
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