badhabits.io

Bad Habits for Students

The habits that hurt students most aren't the obvious ones. They're the ones that feel like studying. Rereading, highlighting, and all-nighters have a large evidence base showing they underperform. Here's what to drop and what to do instead.

Nail biting

Worth breaking

Biting your fingernails or the skin around them, usually without noticing you've started.

Leg shaking

Actually fine

Bouncing or jiggling your leg while sitting, often without noticing.

Too much caffeine

It depends

Leaning on coffee or energy drinks past the point where they help, chasing alertness that never quite arrives.

Procrastination

Worth breaking

Habitually delaying tasks you intend to do, despite knowing you'll be worse off for it.

Napping

Actually fine

Sleeping briefly during the day, typically in the early afternoon.

Knuckle cracking

Actually fine

Popping your knuckles by stretching or bending your fingers until they crack.

Hair pulling

It depends

Pulling out hair from your scalp, eyebrows, or eyelashes, often during idle or focused moments.

Cheek biting

It depends

Biting or chewing the inside of your cheek, often while concentrating or feeling tense.

Overthinking

Worth breaking

Replaying decisions and possibilities in endless mental loops that analyze without concluding.

Skin picking

It depends

Picking at pimples, scabs, bumps, or the skin around your nails, often on autopilot.

Talking to yourself

Actually fine

Speaking your thoughts aloud while working, deciding, searching, or processing the day.

Binge drinking

Worth breaking

Regularly drinking large amounts in single sessions: the weekend-heavy pattern that feels normal because everyone around you does it too.

Chewing gum

It depends

Regularly chewing gum throughout the day, often for focus, freshness, or fidgeting.

Slouching

It depends

Sitting or standing with a rounded back and shoulders instead of an upright posture.

All-nighters

Worth breaking

Skipping an entire night of sleep, usually to study, meet a deadline, or game.

Interrupting

Worth breaking

Cutting people off mid-sentence to insert your own thought before they finish.

Gossiping

It depends

Talking about people who aren't present, from harmless catching-up to reputation-damaging speculation.

Vaping

Worth breaking

Habitual use of e-cigarettes or vapes, often in near-constant small hits throughout the day.

Binge-watching

It depends

Watching multiple episodes of a show back-to-back in one sitting, often unplanned.

Caffeine after noon

It depends

Drinking coffee, tea, or energy drinks in the afternoon or evening.

Carrying a bag on one shoulder

It depends

Always hauling a heavy bag on the same shoulder instead of balancing the load.

Catastrophizing

Worth breaking

Jumping from a small setback straight to the worst-case scenario and treating it as likely.

Checking your phone first thing in the morning

Worth breaking

Reaching for your phone within moments of waking to check messages, email, news, or social feeds.

Comparing yourself on social media

Worth breaking

Habitually measuring your life, body, or success against the curated posts you see on social media.

Comparing yourself to others

Worth breaking

Habitually measuring your life, progress, and worth against other people's visible results.

Cramming

Worth breaking

Compressing all your studying into the night or two before the exam.

Crash dieting

Worth breaking

Repeatedly attempting rapid weight loss through severe restriction, followed by rebound.

Daily weed

It depends

Using cannabis every day, usually evenings, until it's less a choice than the default way a day ends.

Doomscrolling

Worth breaking

Compulsively scrolling through negative news and social media feeds long past the point of learning anything useful.

Drowsy driving

Worth breaking

Driving while fighting sleep: heavy lids, drifting attention, and miles you don't remember.

Eating too fast

Worth breaking

Finishing meals in just a few minutes, often barely chewing or noticing the food.

Emotional eating

Worth breaking

Eating in response to stress, boredom, sadness, or other feelings rather than physical hunger.

Energy drinks

Worth breaking

Relying on canned caffeine-sugar combinations to get through ordinary days.

Gaming too much

It depends

Spending more time gaming than feels healthy, often at the expense of sleep, work, or relationships.

Ghosting

Worth breaking

Ending contact (with dates, friends, or commitments) by silently disappearing instead of saying so.

Highlighting everything

Worth breaking

Painting the textbook yellow: marking so much that the marks stop meaning anything.

Hitting snooze

It depends

Repeatedly delaying getting up with the snooze button, often for thirty minutes or more.

Holding your pee

It depends

Regularly delaying bathroom trips despite a clear urge to urinate.

Irregular sleep schedule

Worth breaking

Going to bed and waking at widely different times from day to day.

Junk food

Worth breaking

Regularly relying on ultra-processed, high-calorie, low-nutrient food as a dietary default.

Late-night snacking

It depends

Eating in the hours before bed, typically after dinner while relaxing or working late.

Leaving all notifications on

Worth breaking

Letting every app buzz, ping, and banner you throughout the day instead of curating which ones can interrupt.

Mindless snacking

Worth breaking

Grazing on food throughout the day without hunger, attention, or a real decision to eat.

Missing deadlines

Worth breaking

Regularly delivering work after the date you committed to.

Multitasking

Worth breaking

Juggling several tasks at once, or rapidly switching between them, instead of finishing one at a time.

Negative self-talk

Worth breaking

A harsh inner voice that narrates your day in criticism: idiot, failure, of course you messed up.

Nicotine pouches

Worth breaking

Using nicotine pouches habitually: invisible, ever-present dosing that never has a reason to stop.

No study schedule

Worth breaking

Studying whenever it happens to happen, which reliably means late, rushed, or not at all.

Not drinking enough water

Worth breaking

Going through the day chronically under-hydrated, often drinking mostly coffee or soda instead.

Not exercising

Worth breaking

Going weeks or months without any deliberate physical activity.

Not flossing

Worth breaking

Skipping flossing, leaving the spaces between your teeth uncleaned day after day.

Not taking notes

It depends

Sitting through lectures empty-handed, trusting that understanding in the moment will still be there at exam time.

One-upping

Worth breaking

Responding to someone's story or struggle by topping it with your own bigger one.

Over-apologizing

Worth breaking

Saying sorry reflexively: for asking questions, taking up space, or things that aren't your fault.

Overeating

Worth breaking

Regularly eating past the point of comfortable fullness, often without noticing until afterward.

Oversharing

It depends

Revealing personal details faster or more widely than the relationship or setting calls for.

Oversleeping

It depends

Regularly sleeping well beyond nine or ten hours, or far past intended wake times.

Passive re-reading

Worth breaking

Reading notes and textbook chapters over and over, hoping repetition turns into memory.

Perfectionism

It depends

Holding your work to extremely high standards and struggling to call anything finished.

Revenge bedtime procrastination

Worth breaking

Staying up late scrolling or watching shows to reclaim personal time, despite needing sleep.

Screens before bed

Worth breaking

Using phones, tablets, or laptops in the hour before sleep, usually in bed.

Seeking validation

It depends

Needing regular external approval (likes, reassurance, compliments) to feel okay about your choices.

Shallow breathing

Worth breaking

Habitually taking quick, shallow chest breaths instead of slower, deeper ones.

Short-form video loops

Worth breaking

Getting stuck watching an endless stream of short videos on TikTok, Reels, Shorts, or similar feeds.

Sitting all day

Worth breaking

Spending most of your waking hours seated, with few breaks for standing or movement.

Skipping breakfast

It depends

Regularly starting the day without eating until midday or later.

Skipping class

Worth breaking

Missing lectures with the standing promise to catch up from slides or recordings later.

Skipping meals

Worth breaking

Irregularly missing meals due to busyness, stress, or forgetting to eat.

Sleeping in on weekends

It depends

Sleeping hours later on weekends than on weekdays.

Studying in bed

It depends

Doing your reading, notes, or laptop work from under the covers.

Studying with your phone

Worth breaking

Keeping your phone next to you while studying: each glance small, the aggregate devastating.

Tech neck

Worth breaking

Craning your head down at a phone or laptop for long stretches of the day.

Teeth grinding

Worth breaking

Clenching or grinding your teeth, during the day or (very commonly) while you sleep.

Touching your face

Worth breaking

Resting hands on your face or rubbing your eyes, nose, and mouth throughout the day.

Using your phone in bed

Worth breaking

Scrolling, watching, or messaging on your phone after getting into bed, usually right before sleep.

Breaking a habit sticks when you track the replacement.

Decide what you'll do instead, then track it daily. A visible streak turns one good decision into a system.

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