High school is when the pressure ramps up: harder courses, college applications, social dynamics, and the question of who you are becoming. It is also when substances, stress, and unhealthy coping habits become more accessible and more tempting. This page covers substance use, sleep, nutrition, exercise, digital wellness, and mental health with the same directness we apply to every topic on this site. We present the data, not the lecture. What you do with the information is up to you.
Substance Use: The Data You Need
Alcohol: Alcohol is the most commonly used substance among high school students. Approximately 30 percent of high school students report drinking alcohol in the past 30 days, and approximately 14 percent report binge drinking (consuming 4 or more drinks for females, 5 or more for males, in a single occasion). Binge drinking is associated with impaired judgment (leading to accidents, sexual assault, and other harm), alcohol poisoning (a medical emergency that can cause brain damage or death), damage to the developing brain (your prefrontal cortex, responsible for decision-making and impulse control, does not fully mature until your mid-20s), and negative effects on academic performance and college admissions (an alcohol-related incident on your record can affect applications).
Vaping and Tobacco: E-cigarette use among high school students rose dramatically before recent regulatory efforts began reducing availability. Nicotine addiction develops faster in adolescent brains than in adult brains, and many students who “just tried it” find themselves unable to stop. If you are currently vaping and want to quit, free resources include the Truth Initiative’s text-based quit program, the CDC’s quitline (1-800-QUIT-NOW), and your school nurse or physician. If you have not started, you are not missing anything. Nicotine provides no cognitive benefit, no performance enhancement, and no lasting pleasure. It creates a dependency that you then spend time, money, and willpower trying to escape.
Marijuana: Marijuana is increasingly legal for adult use in many states, which can create the impression that it is safe for adolescents. It is not. Regular marijuana use during adolescence is associated with measurable decreases in IQ, impaired memory and attention, increased risk of anxiety and depression, and decreased motivation and academic performance. THC concentrations in modern marijuana products (particularly edibles and concentrates) are significantly higher than what was available in previous decades, increasing the risks. If you choose to use marijuana, understand that you are making a trade-off with measurable consequences for your cognitive development.
Prescription Drug Misuse: Using prescription medications without a prescription (stimulants like Adderall® for studying, opioids for pain or euphoria, benzodiazepines for anxiety) is both dangerous and illegal. Stimulant misuse does not improve academic performance in people who do not have ADHD; it merely increases alertness temporarily while increasing heart rate, blood pressure, and risk of dependence. Opioid misuse carries risk of respiratory depression and death, particularly when combined with alcohol. If you are struggling with academic pressure, anxiety, or pain, talk to a physician. There are safer, more effective approaches.
Sleep, Nutrition, and Exercise
Sleep: Teenagers need 8 to 10 hours of sleep per night. Most high school students get significantly less, and the consequences are measurable: impaired memory consolidation (which directly affects academic performance), decreased attention and reaction time (which increases accident risk, especially for new drivers), mood instability (sleep deprivation mimics some symptoms of depression), and weakened immune function. The most effective thing you can do for your academic performance may not be studying more. It may be sleeping enough. Consistent sleep and wake times (even on weekends) improve sleep quality. Caffeine after 2 PM and screen use within an hour of bed both interfere with sleep onset.
Nutrition: Your body and brain are still growing, and they need adequate fuel. Skipping meals (particularly breakfast) impairs cognitive function during morning classes. Relying on energy drinks, sugary snacks, and fast food provides short bursts of energy followed by crashes. Sustainable energy comes from balanced meals with protein, complex carbohydrates, healthy fats, and vegetables. Hydration matters: even mild dehydration (1 to 2 percent body weight loss from water) impairs attention, memory, and mood. Carry a water bottle and drink throughout the day.
Exercise: Physical activity is one of the most effective interventions for stress, anxiety, and depression, all of which are common among high school students. Regular exercise improves mood, sleep quality, cognitive function, and cardiovascular health. The WHO recommends at least 60 minutes of moderate to vigorous physical activity daily for adolescents. If organized sports are not your thing, walking, cycling, swimming, yoga, dance, or any physical activity you enjoy counts. The best exercise is the one you actually do consistently.
Digital Wellness and Social Media
Social media use among high school students is associated with increased rates of anxiety, depression, body dissatisfaction, and sleep disruption. The mechanisms are multiple: social comparison (comparing your real life to others’ curated highlights), cyberbullying, fear of missing out (FOMO), and the dopamine-driven reinforcement loop of notifications and likes. This does not mean you need to delete all social media. It means being intentional: set time limits, curate your feeds to include content that informs or inspires rather than content that triggers negative emotions, turn off non-essential notifications, and protect your sleep by keeping phones out of the bedroom at night.
Mental Health
Approximately 1 in 5 adolescents experiences a mental health condition, and the rates of anxiety and depression among high school students have increased over the past decade. Academic pressure, social stress, identity development, family issues, and uncertainty about the future all contribute. Mental health conditions are not character flaws. They are medical conditions that respond to treatment. If you are experiencing persistent sadness, anxiety, irritability, sleep changes, appetite changes, difficulty concentrating, withdrawal from activities you used to enjoy, or thoughts of self-harm, talk to a trusted adult and seek professional help. Your school counselor, your physician, or a mental health professional can provide assessment and treatment. See our wellness and mental health page.
For more on planning your high school years, see the high school hub.
Stress Management: High school stress is real and cumulative. Academic pressure, extracurricular commitments, standardized test preparation, college applications, social dynamics, family expectations, and uncertainty about the future can produce chronic stress that affects your physical health (headaches, stomach problems, muscle tension, weakened immunity), your mental health (anxiety, irritability, difficulty sleeping, feeling overwhelmed), and your academic performance (difficulty concentrating, reduced motivation, impaired memory). Effective stress management is not about eliminating stress but about developing healthy responses to it. Evidence-based strategies include physical exercise (the single most effective stress reducer), adequate sleep (stress and sleep deprivation create a vicious cycle), time management (reducing the last-minute pressure that amplifies stress), social connection (talking to friends, family, or a counselor about what you are feeling), mindfulness and relaxation techniques (deep breathing, progressive muscle relaxation, meditation), and setting boundaries (saying no to commitments that exceed your capacity). See our wellness and mental health page for more strategies.
Building Habits That Last: The habits you build in high school tend to persist. Students who establish regular exercise routines, consistent sleep schedules, and healthy eating patterns during high school carry those habits into college and beyond. Conversely, students who develop patterns of sleep deprivation, poor nutrition, substance use, or excessive screen time often find those patterns harder to break later. Think of your current health choices as an investment in your future self. The student who arrives at college already knowing how to manage sleep, stress, and nutrition has a significant advantage over the student who has to learn these skills while simultaneously handling college-level academics.
References
Centers for Disease Control and Prevention (CDC). “Youth Risk Behavior Surveillance System.” CDC, 2025. https://www.cdc.gov/yrbs/. Accessed March 2026.
National Institute on Drug Abuse (NIDA). “Monitoring the Future Survey.” NIDA, 2025. https://nida.nih.gov/research-topics/trends-statistics/monitoring-future. Accessed March 2026.
World Health Organization. “Physical Activity for Adolescents.” WHO, 2025. https://www.who.int/news-room/fact-sheets/detail/physical-activity. Accessed March 2026.