The article "Social Jetlag and Obesity" by Roenneberg, Allebrandt, Merrow, and Vetter, published in *Current Biology* in 2012, explores the relationship between social jetlag and obesity. The authors investigate how the mismatch between our natural sleep patterns and the demands of modern lifestyles, often referred to as social jetlag, can contribute to obesity. They highlight the impact of this mismatch on sleep duration and quality, suggesting that it may lead to increased risk factors for obesity. The study also includes a correction to a formula in the supplemental information, clarifying the calculation of the "sleep duration across the seven-day week" (SD_week) to better reflect the actual data.The article "Social Jetlag and Obesity" by Roenneberg, Allebrandt, Merrow, and Vetter, published in *Current Biology* in 2012, explores the relationship between social jetlag and obesity. The authors investigate how the mismatch between our natural sleep patterns and the demands of modern lifestyles, often referred to as social jetlag, can contribute to obesity. They highlight the impact of this mismatch on sleep duration and quality, suggesting that it may lead to increased risk factors for obesity. The study also includes a correction to a formula in the supplemental information, clarifying the calculation of the "sleep duration across the seven-day week" (SD_week) to better reflect the actual data.