https://video.pavel-english.ru/videos/watch/9457a70a-5d1f-462a-83cb-103e45d0404b Humans are considered the superior species on Earth, but are our bodies as efficient as the bodies of other animals? Sam and Roy talk about this topic and teach you related vocabulary. This week's question Efficiency involves an input and an output. It‘s about the relationship between the amount of energy coming in – in other words, the food we eat - and the amount of the energy going out – the usual movements and activities of day-to-day life. So, according to this definition, which animal is the most efficient? a) an ant b) a whale c) a human Listen to the programme to find out the answer. Vocabulary crouched bent at the knees, closer to the ground and leaning forward slightly dogleg having a bent shape, like a dog’s leg; a sharp bend in a road or path optimal age best age; age at which you are most likely to succeed in an activity drops off decreases in amount or quality sweet spot best possible combination of factors or circumstances muscle mass the amount of muscle in your body, as opposed to fat or bone [Cover: Getty Images] You can download audio and text here: https://www.bbc.co.uk/learningenglish/english/features/6-minute-english_2022/ep-220915 More 6 Minute English episodes: Are you following your dreams? https://youtu.be/26PrgjTboVQ Do emojis make language better? https://youtu.be/jdu6GCU42zU People who can taste words https://youtu.be/cr2TXucwjVk Finding your way in space https://youtu.be/EBAc4PIQC2Y Britain's love affair with coffee https://youtu.be/fJoCs5Z_QvE Intimacy on screen https://youtu.be/4pDImFxHNuY Personalised diets https://youtu.be/dJZ9CSbGueU #learnenglish #human #body #efficiency #animals Thu, 09 Jul 2026 04:38:29 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://video.pavel-english.ru https://video.pavel-english.ru/client/assets/images/icons/icon-96x96.png https://video.pavel-english.ru/videos/watch/9457a70a-5d1f-462a-83cb-103e45d0404b All rights reserved, unless otherwise specified in the terms specified at https://video.pavel-english.ru/about and potential licenses granted by each content's rightholder.