Đề thi thử số 12 — Reading 40 câu (có bài đọc)

Mental health challenges among young people have reached alarming levels worldwide, prompting concern from educators, healthcare professionals, and policymakers. According to the World Health Organization, approximately 14 percent of adolescents aged 10 to 19 worldwide experience a mental health disorder, with anxiety and depression being the most common. In some countries, the rates are even higher—recent surveys in the United States and United Kingdom have found that more than a third of teenagers report persistent feelings of sadness or hopelessness.

Several factors contribute to this growing crisis. The rise of social media has been widely cited as a significant influence, with studies linking heavy social media use to increased rates of anxiety, depression, and body image concerns among young people. The constant comparison to curated online personas, cyberbullying, and the addictive nature of social platforms are believed to undermine mental well-being. Additionally, academic pressure has intensified in many countries, with students facing rigorous curricula, high-stakes testing, and competition for limited spots in prestigious universities.

The COVID-19 pandemic dramatically worsened the situation. Lockdowns, school closures, and social isolation disrupted the daily routines and support systems that young people rely on. A 2022 study published in the journal JAMA Pediatrics found that anxiety and depression rates among adolescents had doubled during the pandemic, with symptoms persisting long after lockdowns ended. Many young people who had previously managed their mental health successfully found themselves struggling as the world reopened.

In response to this crisis, schools, governments, and nonprofits are expanding mental health services for young people. Many schools are hiring additional counselors, integrating social-emotional learning into curricula, and training teachers to recognize warning signs. Crisis hotlines and text-based support services have proliferated, recognizing that young people are more likely to seek help through digital channels. While these efforts are promising, mental health professionals emphasize that addressing the crisis will require systemic change—including reduced academic pressure, safer online environments, and broader cultural shifts in how society views and discusses mental health.

Workplace stress has become a defining feature of modern employment, with significant consequences for both individual well-being and organizational performance. The American Psychological Association reports that nearly two-thirds of workers cite work as a significant source of stress, and stress-related absences cost U.S. employers an estimated $300 billion annually in lost productivity, healthcare costs, and turnover. The World Health Organization now officially recognizes burnout—a state of chronic physical and emotional exhaustion—as an occupational phenomenon, highlighting its growing impact on global health.

Burnout typically develops gradually and is characterized by three main dimensions. The first is emotional exhaustion, in which workers feel drained and unable to give of themselves at work. The second is cynicism or detachment from one's job, often manifesting as a loss of idealism and increased negativity about work tasks. The third is a sense of reduced personal accomplishment, where individuals feel their work no longer matters or makes a difference. Together, these symptoms can severely impair job performance, relationships with colleagues, and overall life satisfaction.

Several workplace factors contribute to burnout. Excessive workload is the most commonly cited cause, with many employees expected to handle responsibilities that would have been distributed among multiple people in previous decades. Lack of control over one's work—being unable to make decisions about how tasks are completed—is another significant factor. Insufficient recognition, poor management, unclear job expectations, and an unhealthy work-life balance also play major roles. In the era of constant connectivity, the blurring of boundaries between work and personal time has intensified these pressures.

Addressing burnout requires action at multiple levels. On an individual level, strategies such as setting clear boundaries, taking regular breaks, exercising, and seeking social support can help. However, experts emphasize that individual solutions are insufficient without organizational change. Effective interventions include reasonable workload limits, flexible work arrangements, opportunities for professional growth, and management training to foster supportive leadership. Some forward-thinking companies have introduced mandatory vacation policies, "right to disconnect" rules, and four-day workweeks, with research showing that such measures often improve rather than harm productivity. The shift toward recognizing burnout as a serious health issue represents an important step in creating healthier, more sustainable work environments.

Sleep is one of the most important yet least understood aspects of human health. While most people recognize that a good night's rest is essential, the biological mechanisms underlying sleep and its effects on the body and mind are complex and continue to be studied intensively. The average adult spends roughly one-third of their life sleeping, and the quality of this sleep has profound implications for nearly every aspect of physical and mental health.

Sleep occurs in several distinct stages that cycle throughout the night. Stage 1 is light sleep, during which the body begins to relax but can be easily awakened. Stage 2 is characterized by slower brain waves and a drop in body temperature, accounting for the largest portion of total sleep time. Stages 3 and 4, known as deep sleep or slow-wave sleep, are when the body performs much of its physical repair work, including tissue growth and immune system strengthening. REM (Rapid Eye Movement) sleep, which occurs periodically throughout the night, is when most dreaming happens and is associated with memory consolidation and emotional processing.

The consequences of insufficient sleep are far-reaching. In the short term, sleep deprivation impairs cognitive function, reducing attention, decision-making ability, and reaction time—which is why drowsy driving is responsible for thousands of fatal accidents each year. Chronic sleep deficiency has been linked to serious health problems including obesity, diabetes, cardiovascular disease, and weakened immune function. Sleep also plays a critical role in mental health; sleep disorders are closely associated with depression, anxiety, and other psychiatric conditions, and improving sleep is often a key component of treatment.

Modern lifestyles pose significant challenges to healthy sleep. The widespread use of smartphones, tablets, and computers before bed exposes users to blue light that suppresses melatonin production, making it harder to fall asleep. Irregular work schedules, particularly shift work, disrupt the body's natural circadian rhythm. Additionally, the cultural normalization of sleep deprivation—treating lack of sleep as a badge of productivity—encourages unhealthy habits. Experts recommend maintaining a consistent sleep schedule, creating a dark and cool sleeping environment, limiting screen time before bed, and avoiding caffeine and alcohol in the hours leading up to sleep as key strategies for improving sleep quality.

Meditation, once considered a primarily spiritual or religious practice, has become the subject of extensive scientific research over the past few decades. Neuroscientists have used advanced brain imaging technologies such as fMRI and EEG to study what happens in the brain when people meditate, and the findings have been remarkable. Regular meditation has been shown to produce measurable changes in brain structure and function, with potential implications for mental health, cognitive performance, and overall well-being.

One of the most well-documented effects of meditation is on the prefrontal cortex—the region of the brain responsible for executive functions such as decision-making, focus, and self-regulation. Studies have found that experienced meditators have increased gray matter density in this area, suggesting enhanced cognitive control. Additionally, meditation has been shown to reduce activity in the amygdala, the brain's fear center, leading to decreased stress reactivity. A 2016 study found that just eight weeks of mindfulness training reduced amygdala volume and improved participants' responses to stressful situations.

Meditation also appears to affect the brain's default mode network (DMN)—the neural network active when we are not focused on a specific task, often associated with mind-wandering and self-referential thoughts. People who meditate regularly show reduced activity in the DMN, which may explain the increased present-moment awareness reported by practitioners. This shift has been linked to improved attention, reduced rumination on negative thoughts, and greater emotional stability. For individuals with conditions like anxiety and depression—where excessive self-referential thinking plays a key role—meditation may offer significant therapeutic benefits.

Beyond structural changes, meditation has been associated with improved functional connectivity between different brain regions, suggesting that it may help the brain work more efficiently as a whole. While the research is still evolving, the evidence is compelling enough that many mental health professionals now incorporate mindfulness-based interventions into their treatment approaches. Programs such as Mindfulness-Based Stress Reduction (MBSR) and Mindfulness-Based Cognitive Therapy (MBCT) have been shown to be effective in preventing relapse in depression and reducing symptoms of anxiety. As scientific understanding of meditation deepens, it is becoming clear that this ancient practice has genuine, measurable benefits for the modern brain.