Six ways your smartwatch is lying to you, according to science
Smartwatches and fitness trackers often provide inaccurate estimates for calories burned, step counts, heart rate, sleep stages, recovery scores, and VO₂max due to reliance on indirect measurements and sensor limitations. These inaccuracies can mislead users about their health and fitness status, especially when used to guide diet, training intensity, or recovery. While useful for tracking general trends, individual metrics should be interpreted cautiously.

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Why do we unconsciously imitate one another 

How two men smashed through a marathon barrier long thought unbreakable
Sabastian Sawe and Yomif Kejelcha completed the marathon in under two hours, breaking the previous world record by significant margins. Key factors included exceptionally high training volumes, optimized carbohydrate intake, advanced lightweight "supershoes" improving running economy, and favorable weather. These performances resulted from the convergence of physiological, biomechanical, nutritional, and technological advancements.

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