Sleep Is Safe and Essential Sleep after concussion is safe and actively promotes recovery. The outdated advice to "keep them awake" or "wake them every hour" came from an era when clinicians confused concussion (mild traumatic brain injury) with more severe injuries involving brain bleeding. For concussion specifically, sleep is the brain's primary repair mechanism, and preventing sleep actively harms recovery (McCrory et al., 2017). Current medical guidelines are clear: let the person sleep. The only precaution during the first night is waking them once (not hourly) to confirm they rouse normally, respond appropriately, and can be awakened. After confirming normal arousability, let them return to sleep. After the first night, no further wake checks are needed unless new red flag symptoms develop. Sleep deprivation after concussion worsens every symptom category: headache intensifies, cognitive function deteriorates further, emotional regulation worsens, and the metabolic crisis takes longer to resolve. Every hour of prevented sleep is an hour of lost recovery. Why the Old Advice Was Wrong The original concern: Decades ago, the advice to keep concussed people awake stemmed from the worry that they might slip into a coma from an undetected brain bleed (epidural or subdural hematoma). The reasoning: if they're awake, you'll notice deterioration. If they're asleep, you might miss it. Why this doesn't apply to concussion: Brain bleeds that cause coma are associated with moderate-to-severe traumatic brain injury, not concussion. They present with specific red flag symptoms (worsening headache, repeated vomiting, one-sided weakness, pupil asymmetry, seizure, progressive confusion) that are identifiable before sleep. If a person is alert, conversing normally, and has no red flag symptoms, the risk of undetected brain bleed is extremely low. The modern approach: Emergency evaluation identifies the rare cases with bleeding risk through clinical assessment and, when indicated, CT imaging. Once evaluated and cleared (or if red flag symptoms are absent), sleep is appropriate and beneficial. The emergency screen replaces the all-night vigil (Silverberg et al., 2020). Sleep's Role in Concussion Recovery Metabolic waste clearance. During deep sleep, the glymphatic system clears metabolic waste products that accumulate during the concussion-related energy crisis. This cleanup process runs primarily during sleep. Without adequate sleep, waste products accumulate and prolong the metabolic disruption. Neural repair. Growth hormone release during deep sleep supports neural repair processes. The protein synthesis needed for cellular recovery is upregulated during sleep. The brain literally rebuilds itself during sleep hours. Cutting sleep cuts repair time. Neurotransmitter rebalancing. Concussion disrupts multiple neurotransmitter systems (glutamate, GABA, serotonin, dopamine). Sleep allows these systems to recalibrate. Chronic sleep deprivation prevents the neurochemical normalization that symptom resolution requires. Memory consolidation. Post-concussion memory problems partly reflect impaired sleep-dependent memory consolidation. Improving sleep quality directly improves the memory and cognitive symptoms people find most concerning. Emotional regulation. REM sleep processes emotional experiences and supports emotional stability. Sleep disruption amplifies the emotional volatility (irritability, anxiety, sadness) common after concussion. Better sleep produces better emotional function. The First-Night Protocol Before sleep: Confirm no red flag symptoms are present (see list below) Note the person's baseline responsiveness (can they answer questions correctly? Are they oriented to person, place, time?) Allow normal sleep onset. Do not keep them awake against their will Plan to check them once, approximately 4-6 hours after they fall asleep The wake check: Gently wake them. They should rouse with normal stimulation (calling name, gentle shoulder touch) Ask a simple question: "What's your name?" or "Where are you?" They should answer correctly, even if groggy and annoyed If they answer appropriately, let them return to sleep If they cannot be awakened, cannot answer correctly, or show new concerning symptoms, seek emergency evaluation After the first night: No further scheduled wake checks needed Allow the person to sleep as long as their body wants Increased sleep need (sleeping 10-12+ hours) is normal during the first week of concussion recovery Don't set alarms. Don't force them to wake at a specific time during the first few days Pre-Sleep Mobility Routine Gentle movement before bed supports sleep quality during recovery: JME 1 Cervical rotation releases the neck tension accumulated throughout the day. JME 3 Lateral flexion calms the nervous system through gentle bilateral neck stretching. JME 14 Chin tucks address the cervical tension that contributes to nighttime headaches. JME 44 Shoulder mobility releases upper body tension that interferes with comfortable sleep positioning. Start your 14-day free trial for pre-sleep mobility routines that support concussion recovery. Evening Wind-Down Movement JME 150 Thoracic rotation releases the mid-back tension from reduced daytime activity. JME 153 Upper back mobility addresses the postural stiffness from extended sitting during recovery. JME 166 Scapular mobility loosens the shoulders for more comfortable sleep positioning. JME 5 Cervical extension gently opens the front of the neck before resting. Red Flag Symptoms (Seek Emergency Evaluation) These symptoms warrant emergency evaluation before allowing sleep: Worsening headache that becomes severe despite medication Repeated vomiting (2 or more episodes) Seizure activity Increasing confusion or disorientation One pupil larger than the other Weakness or numbness on one side of the body Slurred speech that worsens Inability to recognize familiar people or places Progressive drowsiness where the person becomes harder to arouse Clear fluid draining from the nose or ears Important distinction: being tired and wanting to sleep (normal after concussion) is different from progressive drowsiness where the person becomes increasingly difficult to rouse (concerning). Normal post-concussion sleepiness means the person falls asleep easily but wakes normally when stimulated. Progressive drowsiness means the person requires increasingly vigorous stimulation to respond. Optimizing Sleep During Recovery Sleep environment. Dark room (blackout curtains or sleep mask), cool temperature (65-68F), quiet environment (earplugs or white noise machine if needed). Remove screens from the bedroom. These standard sleep hygiene measures become critical when concussion has disrupted sleep regulation. Sleep schedule. Go to bed and wake at consistent times starting from day 3-4. During days 1-3, sleep as needed without schedule pressure. After the initial rest period, consistent sleep-wake timing helps recalibrate the circadian rhythm that concussion disrupts. Napping. Short naps (20-30 minutes) before 2 PM are appropriate if fatigue is overwhelming. Avoid long naps or late-afternoon naps that interfere with nighttime sleep. The goal is consolidated nighttime sleep, supplemented by brief naps when needed. Melatonin. Low-dose melatonin (0.5-3mg) 30 minutes before bedtime helps some people with concussion-related sleep onset difficulty. Discuss with your healthcare provider before using. Melatonin supports circadian regulation without the sedative effects of sleep medications that impair recovery. Build healthy sleep habits with simplmobility's evening mobility routines. How often should I wake someone after a concussion? Once during the first night is sufficient. Wake them approximately 4-6 hours after they fall asleep, confirm they respond normally to questions, and let them return to sleep. After the first night, no further scheduled wake checks are needed unless new red flag symptoms develop. My child wants to sleep all day after a concussion. Is this okay? Increased sleep need is normal during the first 3-5 days of concussion recovery. Allow it. The brain is doing repair work that requires sleep. If excessive sleepiness persists beyond the first week or the child becomes progressively harder to wake (not just sleepy but truly difficult to arouse), seek medical evaluation. I have insomnia after my concussion. What should I do? Post-concussion insomnia affects 30-50% of concussed individuals. Address sleep hygiene first: consistent schedule, dark and cool room, no screens before bed, limit caffeine to morning only. If insomnia persists beyond 2 weeks, discuss with your healthcare provider. Cognitive behavioral therapy for insomnia (CBT-I) is the first-line treatment, as it addresses the underlying patterns without medication side effects. References McCrory, P., et al. (2017). Consensus statement on concussion in sport. British Journal of Sports Medicine, 51(11), 838-847. PubMed Silverberg, N. D., et al. (2020). Management of concussion and mild traumatic brain injury: A synthesis of practice guidelines. Archives of Physical Medicine and Rehabilitation, 101(2), 382-393. PubMed