![Humans naturally run at the most energy-efficient speed - whether it's a quick jog or a marathon | Daily Mail Online Humans naturally run at the most energy-efficient speed - whether it's a quick jog or a marathon | Daily Mail Online](https://i.dailymail.co.uk/1s/2022/04/28/12/57156297-0-image-a-12_1651146397672.jpg)
Humans naturally run at the most energy-efficient speed - whether it's a quick jog or a marathon | Daily Mail Online
![Jogging running people. Sport running group concept. Various people runners group in motion speed. | Stock vector | Colourbox Jogging running people. Sport running group concept. Various people runners group in motion speed. | Stock vector | Colourbox](https://d2gg9evh47fn9z.cloudfront.net/800px_COLOURBOX33831571.jpg)
Jogging running people. Sport running group concept. Various people runners group in motion speed. | Stock vector | Colourbox
![Average running speed for different movement intensities in the final... | Download Scientific Diagram Average running speed for different movement intensities in the final... | Download Scientific Diagram](https://www.researchgate.net/publication/221737188/figure/fig3/AS:664979476860941@1535554870197/Average-running-speed-for-different-movement-intensities-in-the-final-75-90-min.png)
Average running speed for different movement intensities in the final... | Download Scientific Diagram
![Topless Muscular Man Runner. Running Jogger Jogging Isolated Black Background Stock Photo - Image of running, muscular: 154739798 Topless Muscular Man Runner. Running Jogger Jogging Isolated Black Background Stock Photo - Image of running, muscular: 154739798](https://thumbs.dreamstime.com/z/one-caucasian-topless-muscular-mature-man-runner-running-jogger-jogging-isolated-black-background-light-painting-speed-154739798.jpg)