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Non refreshing sleep can be due to Anxiety as you described. It's like the brain was continuously working and was overwhelmed because of the overthinking. The fear and anxiety don't let you relax fully and unwind properly. Mental health issues need to be addressed properly and not just supressed. Multivitamins are not going to be much helpful. Not being able to focus on studies right before exams can be detrimental. Please consult for detailed evaluation and management. Mental health needs as much attention as any physical health issues like diabetes or hypertension. You can try some basic relaxation techniques like grounding (5-4-3-2-1), box breathing or progressive muscle relaxation techniques. Consult for detailed evaluation and management plan. I provide online consultation and therapy support.

Can be due to anxiety. Please share if you have constipation,  retrolental burning, etc digestive symptoms? Make a fixed time table for studies, take small frequent meals, avoid late evening meals, spicy, heavy fried foods. Avoid tea, coffee in evenings. Drink more water. Try to sleep and wake up  at a fixed time daily. Do some deep breathing, pranayam daily.

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What you’re describing isn’t “just stress” — it’s a mix of metabolic + sleep quality + anxiety-driven cognitive fatigue. The good news: this pattern is common and reversible, but it needs a structured approach (not just supplements). 1. Insulin resistance / prediabetes swings • Your clues: • “Crash after rice/sugary food” • “Feel better only after eating” • History of prediabetes + PCOS (important) 2. Non-restorative sleep (even if hours are enough) • Feeling like you “can sleep more” despite adequate duration • Could be: • Poor sleep architecture (stress/anxiety) • Late-night cortisol • Irregular schedule 3. Exam anxiety → cognitive overload • Restlessness, irritability, poor focus • This worsens both sleep + glucose control (via cortisol) 4. Possible contributors you should NOT ignore • Iron deficiency (very common in females) • Vitamin D/B12 may be corrected but functional fatigue can persist • Subclinical mood/anxiety disorder There is no single “permanent solution pill” here. But with correct steps, you can feel 70–90% better within 2–3 weeks — which is crucial since your exam is in 20 days. 1. Fix your diet (this is the biggest lever) Avoid: • White rice (especially daytime) • Sugar, sweets, packaged snacks • Fruit juices Switch to: • Small frequent meals every 3–4 hrs • High protein + fiber Ideal exam-day diet pattern: • Morning: eggs / paneer + nuts • Lunch: roti + dal + sabzi (avoid rice for now) • Evening: fruit + peanuts • Dinner: light protein-based Add: • 1 tsp soaked chia/flax seeds daily ⸻ 2. Stabilize your brain energy • Never study on empty stomach → causes “crash” • Keep: • Roasted chana / peanuts nearby • Dark chocolate (small amount) if needed ⸻ 3. Control anxiety (non-negotiable) Your symptoms = partly sympathetic overdrive Do daily: • 5–10 min slow breathing (4-4-6 pattern) • 20 min walk (improves insulin + focus) If severe: • Short-term medication (like propranolol or anxiolytics) may help → consult physician ⸻ 4. Improve sleep quality (not just duration) • Fixed sleep time (even before exam) • No phone 30–45 min before bed • If mind racing: • Write next-day tasks before sleeping ⸻ 5. Consider these tests (if possible quickly) • HbA1c • Fasting insulin • CBC (look for anemia) • Ferritin 6. Medication options (doctor-supervised) Given your PCOS + prediabetes: • Metformin → very helpful for: • Energy crashes • Brain fog • Short-term anti-anxiety support

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When a patient feels their 'body crashes' after consuming rice or sugar, it is a hallmark of Reactive Hypoglycemia or insulin resistance associated with a pre-diabetic state. In a 25-year-old student, the physiological strain of high blood sugar spikes followed by crashes, combined with intense exam anxiety, creates a cycle of brain fog, restlessness, and distorted focus. The solution lies in stabilizing glucose levels to provide steady energy to the brain."

Lifestyle modifications and dietary changes is key.

This sounds like a mix of poor sleep quality, anxiety and possible blood sugar fluctuations, which can make you feel tired even after sleeping and affect focus. It’s quite common, especially with exam stress, and it can be improved. Small changes in sleep routine and diet can make a big difference, but since it’s affecting your daily functioning, a more structured plan would help you feel better faster. I can guide you step by step to get your sleep and energy back on track feel free to consult.

Do regular exercises ,get fresh air,avoid screen time .Try to sleep for atleast 6-7 hrs. If could get a counselling and consult for Gastroenterologist. Anxiety May be due to GI cause 

Aapka jo pattern hai—sleep theek hone ke baad bhi thakan, focus na hona, restlessness, exam anxiety + rice/sugary cheez ke baad “crash”—ye 2 cheezon ka mix lag raha hai: 1. anxiety/stress related sleep disturbance 2. glucose fluctuation (prediabetes type insulin spike → phir dip, isliye neend/jhadapan feel hota hai) Iska ek hi “permanent solution” nahi hota, par sahi routine se kaafi control ho jata hai. Filhaal aap practical steps follow karein: Sleep + anxiety: * Fixed sleep–wake time rakhiye (chahe neend aaye ya na aaye, same time uthna hai) * Sone se 1 ghanta pehle mobile/laptop band * Raat me dim light, heavy discussion/study avoid * Agar dimaag race kar raha ho → 4-7-8 breathing ya slow deep breathing 10 min * Short term ke liye melatonin 3 mg raat me le sakte hain (safe hai usually) Energy/focus: * Subah empty stomach bilkul na rahein → protein + fat add karein (eggs / paneer / nuts) * Rice/sugary cheez se crash ho raha hai → unhe kam karein ya protein ke saath lein * Small frequent meals (3 bade meals ke jagah 5 chhote) * Hydration maintain karein Prediabetes angle: * HbA1c ek baar check karwa lijiye * Daily 30 min brisk walk bahut important hai * High GI food (white rice, sweets, bakery) avoid karein Exam anxiety: * 45–50 min study + 10 min break pattern follow karein * “Perfect focus” expect na karein—thoda scattered feel hona normal hai is phase me Agar phir bhi: * neend poor rahe * anxiety control na ho * ya daily functioning affect ho to ek baar physician/psychiatrist se milke short-term anti-anxiety ya sleep support lena helpful hota hai (temporary, addiction type nahi hota jab properly diya jata hai). Abhi aapka case reversible hai, bas routine + diet + anxiety control pe kaam karna padega

Just improve your routine .. Sleeping and eating on time .. and do some morning exercise or walking.

Kindly do connect and consult

Need few more details Kindly consult

Need a few more details please consult for further evaluation and treatment

Do consult

Can help you, kindly consult and provide detailed history for proper diagnosis and further management