By Sejuti Mumu

It has become a habit for youth to sleep late at night. They stay awake all night either scrolling through reels or studying. Even if they study late at night, it is very harmful to their health. Nowadays, staying up late has become a trend among young people. If anyone goes to sleep before 12 AM, they are mocked for being uncool. However, maintaining a healthy sleep cycle is crucial.

Our body is just like a machine. Just as our mobile phone needs to be charged, our body and mind need to be recharged as well. Proper sleep acts as our ultimate power booster. Every healthy human being needs seven to eight hours of quality sleep. Many of us think that if we stay awake at night and work, our goals will be fulfilled sooner. However, even if we succeed in life this way, our future health remains at risk. We have to prioritize our health. Let's examine what staying up late and sleeping less can do to our bodies and minds:

Impact on the Body (Physical Health)

Weakened Immune System: Sleep is when the immune system releases proteins called cytokines, which help fight infection and inflammation. Lack of sleep lowers infection-fighting cells, making you more susceptible to illnesses like the common cold or flu and lengthening recovery times.

Cardiovascular Strain: Staying up late and cutting sleep short keeps blood pressure and heart rates elevated longer than normal. Over time, chronic sleep deprivation increases the risk of high blood pressure, heart disease, stroke, and irregular heart rhythms.

Metabolic and Weight Disruptions: Sleep regulates the hormones that control hunger—ghrelin (which stimulates appetite) and leptin (which signals fullness). Sleep deprivation increases ghrelin and decreases leptin, leading to intense cravings for sugary, high-fat foods. It also impairs the body's ability to process glucose, raising the risk of insulin resistance and Type 2 diabetes.

Hormonal Imbalances: Late-night alertness interferes with the production of vital hormones, including growth and reproductive hormones, affecting tissue repair, muscle growth, and overall vitality.

Accelerated Skin Aging: During deep sleep, the skin repairs itself and increases blood flow. Chronic sleep loss reduces collagen production, leading to dull skin, fine lines, dark circles under the eyes, and a slower recovery from breakouts or sun damage.

Impact on the Mind (Mental and Cognitive Health)

Cognitive and Memory Impairment: Sleep is crucial for memory consolidation, the process where the brain transforms short-term experiences into long-term memories. Late nights impair focus, attention span, problem-solving skills, and reaction times, making learning and decision-making significantly harder.

Emotional Instability and Mood Swings: The amygdala (the emotional center of the brain) becomes hyperactive when sleep-deprived, while the prefrontal cortex (which regulates emotions) loses its ability to keep reactions in check. This leads to increased irritability, moodiness, frustration, and a lower tolerance for stress.

Increased Risk of Anxiety and Depression: Persistent sleep disruption is deeply linked to mental health struggles. Lack of rest alters neurotransmitter levels (like serotonin and dopamine), increasing vulnerability to chronic anxiety, depressive episodes, and persistent feelings of burnout.

Brain Fog and Reduced Productivity: Without adequate rest, brain cells accumulate metabolic waste products. Sleep clears these toxins out, and missing out leaves you feeling sluggish, forgetful, and mentally fatigued ("brain fog"), drastically reducing daily efficiency.

For the sake of our overall well-being, we must get proper sleep. It is vital for every human being.

Writer: Sejuti Mumu, Student of Bangla Department, Begum Rokeya University.