The "Youth Risk Behavior Survey Data Summary & Trends Report for Dietary, Physical Activity, and Sleep Behaviors: 2013-2023" provides the most recent surveillance data, the 10-year trends, and 2-year changes in health behaviors and experiences among high school students in the United States (U.S.). This report is a companion to the "Youth Risk Behavior Survey Data Summary & Trends Report: 2013-2023" and focuses on high school students' dietary, physical activity, and sleep behaviors. The Centers for Disease Control and Prevention's (CDC) Division of Adolescent and School Health (DASH) developed this report to highlight the national Youth Risk Behavior Survey (YRBS) data. YRBS data are collected every 2 years among a nationally representative sample of U.S. high school students. Overall, U.S. high school students did not engage in adequate levels of healthy dietary, physical activity, and sleep behaviors. The 10-year trends from 2013 to 2023 also show a decline in healthy dietary, physical activity, and sleep behaviors. Data show a decline in the percentage of students eating fruit, vegetables, and breakfast daily. Data also highlight a decline across healthy physical activity and sleep behaviors, including daily physical activity, muscle-strengthening, attending daily physical education classes, sports team participation, and getting at least 8 hours of sleep. Both female students and LGBTQ+ students are less likely than their peers to engage in most of these health behaviors that help prevent chronic diseases. This summary highlights continuing concerns and signs of progress from the most recent YRBS data collected during 2023 for dietary, physical activity, and sleep behaviors. The body of the report provides more detail and findings.