A good night’s sleep is essential for physical health, mental clarity and overall well-being.
Yet many people struggle with poor sleep without realising that certain everyday habits – often done unconsciously – may be quietly disrupting their sleep cycle.
This World Sleep Day, Firstpost spoke to Dr. Ravichandra MRK, Senior Consultant Physician and Clinical Lead of Sleep Medicine, Narayana Health City, Bengaluru, who shared with us seven worst habits that can disrupt your sleep without you even realising.
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1. Revenge bedtime procrastination
Dr. MRK defines revenge bedtime procrastination as “a psychological response to a high-stress or high-control daytime environment.”
“When your day is packed with demands from work, family, or chores, you feel a freedom deficit. By the time your bedtime hits, you stay awake not because you aren’t tired, but because it is the only time you feel you own. You trade sleep for a sense of agency, often through mindless scrolling,” explains the doctor.
To fix this, the expert says you can set a shutdown alarm 30 minutes before bed. When it goes off, put the phone in another room to charge. This physically removes the temptation to trade your health for one more dopamine-hitting video.
2. The afternoon caffeine
Most people use caffeine to mask a midday fuel that occurs naturally about seven hours after waking.
“Because caffeine blocks (adenosine receptors) the chemical that signals sleepiness, you don’t feel tired even though your body needs rest,” shares Dr. MRK.
Here’s what you can do: The doctor urges people to implement a caffeine curfew after lunch. “If you feel any energy crash, try a 10-minute walk in the sun or a glass of ice-cold water instead. These provide a natural cortisol boost without the long-lasting chemical interference. If you must have the taste of coffee, switch to decaf or herbal tea to satisfy the ritual without the stimulant,” he states.
3. Using your bed as a multi-purpose office
Your brain is a master of association. “When you work, answer emails, or eat in bed, you are teaching your nervous system that the bed is a place for alertness, stress, and active digestion,” explains the expert.
“This creates cognitive arousal, where your brain remains hyperactive the moment you lie down, simply because that’s what it usually does in that space. Use your bed for sleeping only,” he adds.
4. The nightcap trap
Dr. MRK shares that alcohol is a central nervous system depressant. It helps you pass out by increasing alpha brain waves, which usually happen when you’re relaxed but awake. However, as the liver metabolizes the alcohol, it creates a rebound effect.
“Your body shifts from deep sleep into light, fragmented sleep. It also relaxes the muscles in your throat, increasing snoring and reducing oxygen intake, leaving you feeling exhausted the next day,” he adds.
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The doctors suggests that if you enjoy a drink, try to finish it at least three to four hours before your head hits the pillow. For every alcoholic drink, consume one large glass of water to help your system process the toxins.
5. Inconsistent wake-up times
Modern life allows us to override our internal biological clocks. “By sleeping in late on Saturday to catch up on lost weekday sleep, you shift your entire circadian rhythm. This makes it impossible to fall asleep at a reasonable time on Sunday night, leading to what researchers call Social Jetlag,” shares Dr. MRK with us.
He further explains that you are essentially forcing your body to change time zones twice every single week.
“To cure this, set a wake-up time that you can stick to within a 60-minute window, seven days a week. While it sounds painful, waking up at 7:30 AM on a Sunday will actually make your Monday morning much easier,” states the clinical lead of sleep medicine.
6. Bright light exposure before bed
Evolutionarily, humans are programmed to get sleepy when the sun goes down.
“Bright artificial lights, especially the blue light from LEDs and screens, mimic the spectrum of midday sunlight. This sends a signal to the Suprachiasmatic Nucleus in your brain to stop producing melatonin. Even 10 minutes of bright bathroom light while brushing your teeth can delay your sleep onset by an hour,” enlightens the doctor.
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Do this instead: If you have to use bright lights late at night, consider wearing amber-tinted blue-light-blocking glasses to protect your melatonin levels from being suppressed by the artificial sun in your living room.
7. Late-night heavy meals
Your body has a hierarchy of needs. If you eat a large meal or spicy noodles at 9:00 PM, your body prioritizes digestion over sleep.
“Digestion requires blood flow to the gut and increases your core body temperature. For deep sleep to occur, your body temperature needs to drop. A hot metabolic engine makes it nearly impossible for the brain to enter the deepest, most restorative stages of sleep,” mentions Dr. MRK.
He urges people to follow the three-hour rule. “Try to finish your last meal at least three hours before bed. If you are genuinely hungry late at night, opt for a small, sleep-friendly snack that combines a complex carb with a protein, like a small bowl of oatmeal or a banana with almond butter,” he says.
Avoid anything spicy, fried, or highly acidic (like citrus or chocolate), as “they can cause silent reflux that wakes you up without you even realising why,” concludes the doctor.
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