After a concussion, you can do more than you might expect, but you need to ease back into things gradually. The current guideline is 24 to 48 hours of complete physical and cognitive rest, then a slow, stepwise return to your normal routine. The old advice of lying in a dark room for days has been replaced by a more active approach: brief rest followed by carefully increasing what you do each day, as long as your symptoms don’t get worse.
The First 48 Hours
The initial one to two days after a concussion are the most restrictive. During this window, your brain needs genuine downtime. That means avoiding physical exertion, limiting mental effort like reading or problem-solving, and staying off screens. A study published in JAMA Pediatrics found that people who avoided all electronic screens (phones, computers, TVs) for the first 48 hours recovered faster than those who used screens freely. This doesn’t mean you need to sit in silence in a dark room. Light activity around the house, quiet conversation, and listening to music or a podcast at low volume are all fine.
Sleep is one of the most important things you can do during this period. Aim for at least seven hours per night, set a consistent wake time even on weekends, and avoid napping within seven hours of your usual bedtime so you don’t throw off your sleep schedule. Your brain does its heaviest repair work during sleep, so protecting that rhythm matters.
Managing Headaches Safely
Headaches are the most common concussion symptom, and you can treat them, but your choice of pain reliever matters. Acetaminophen (Tylenol) is considered safe. Ibuprofen (Advil, Motrin) and aspirin are not recommended because they may increase the risk of bleeding inside the skull. This distinction is important in the first days after a head injury when bleeding risk is highest.
Returning to School or Work
Most people can return to school or work within one to two days, even if some symptoms are still present. The key is making temporary adjustments so your brain isn’t overwhelmed. For students, that might look like reduced homework loads, extra time on tests, limiting exams to one per day, scheduled rest breaks, and permission to record lectures instead of taking handwritten notes. For adults at work, the same principles apply: shorter hours, fewer meetings, more frequent breaks, and reduced screen time.
You don’t need to wait until you’re 100 percent symptom-free to go back. The goal is to do as much as you can tolerate without making symptoms noticeably worse. If a task brings on a headache or brain fog, scale back and try again the next day. Think of it like turning a dial rather than flipping a switch.
When You Can Exercise Again
Physical activity follows a six-step progression, and each step requires a minimum of 24 hours before moving to the next. The rule at every stage: if symptoms return or new ones appear, stop, rest, and drop back to the previous step.
- Step 1: Return to regular daily activities like school or work, with clearance from a healthcare provider to begin the progression.
- Step 2: Light aerobic activity only. Five to ten minutes of walking, light jogging, or a stationary bike. No weight lifting.
- Step 3: Moderate activity that adds head and body movement. Moderate jogging, moderate-intensity biking, lighter-than-usual weightlifting.
- Step 4: Heavy non-contact activity. Sprinting, high-intensity biking, your normal weightlifting routine, sport-specific drills without contact.
- Step 5: Full practice with contact, in a controlled setting.
- Step 6: Return to competition.
Under ideal conditions, the fastest possible timeline from rest to competition is about six days. In practice, it often takes longer because symptoms can resurface at any step.
Screen Time After the First Two Days
Once the initial 48-hour rest period passes, you can begin reintroducing screens gradually. Start with short sessions of 15 to 20 minutes and see how you feel. If scrolling through your phone or watching TV triggers a headache, eye strain, or dizziness, take a break and try again later. Many people find that reducing screen brightness, using dark mode, and taking frequent breaks helps them tolerate screens sooner. You don’t have to avoid screens entirely for your whole recovery, just build your tolerance back up in stages.
Eating and Drinking for Recovery
Your brain burns extra energy while healing, so nutrition matters more than usual. Small, frequent meals every two to three hours work better than three large ones, because they keep a steady supply of fuel available. Don’t skip breakfast.
Focus on nutrient-dense snacks: fruit, smoothies, nuts, trail mix. Stay well hydrated throughout the day rather than waiting until you feel thirsty. If plain water doesn’t appeal to you, adding lemon or lime, or getting fluids through fruits, vegetables, and smoothies all count. There’s no magic concussion diet, but consistently feeding your brain and keeping it hydrated gives it the raw materials it needs to repair.
Driving Restrictions
Driving is one activity that deserves extra caution. A concussion can slow your reaction time, impair your peripheral vision, and make it harder to process multiple things at once, all of which are critical behind the wheel. Many states restrict driving for a period after a significant neurological event, and if you had a seizure following your injury, most states require you to be seizure-free for at least six months before driving again. Some states may also require a formal evaluation by a driving rehabilitation specialist, even if you already have a valid license. Until you’ve been cleared, arrange other transportation.
Why Avoiding a Second Hit Matters
The single most important thing you can do with a concussion is protect your brain from another impact while it’s still healing. There is a window of vulnerability lasting roughly 10 to 15 days after the initial injury during which a second blow to the head can trigger a rare but catastrophic condition called second impact syndrome. The brain, already struggling to regulate blood flow from the first concussion, loses the ability to control swelling after a second hit. Pressure inside the skull can rise rapidly, potentially causing brain herniation, respiratory failure, and death within minutes.
Second impact syndrome is extremely rare, but it’s also almost entirely preventable by simply not returning to contact sports or high-risk activities before you’re fully recovered. This is why the graduated return-to-play protocol exists and why no step should be skipped.
Danger Signs That Need Emergency Care
Most concussions resolve on their own, but certain symptoms signal something more serious. Call 911 or go to an emergency room if you experience any of the following after a head injury:
- Seizures or uncontrollable shaking
- Repeated vomiting
- A headache that keeps getting worse and won’t go away
- One pupil noticeably larger than the other, or double vision
- Slurred speech, weakness, numbness, or loss of coordination
- Increasing confusion, restlessness, or inability to recognize people or places
- Excessive drowsiness or inability to stay awake
For infants and toddlers, the same signs apply, plus inconsolable crying and refusal to eat or nurse.