After a head injury, it is important to be cautious when starting light exercise to avoid worsening symptoms or causing further injury. The first step is to allow an initial period of 24 to 48 hours of both physical and cognitive rest. This means avoiding activities that require thinking or physical exertion beyond basic daily tasks. After this rest period, light exercise can be gradually introduced under medical guidance[2][7].
When beginning light exercise, focus on activities that do not involve resistance training or risk of head impact. Examples include walking or using a stationary bike at a gentle pace. The goal is to increase blood flow to the brain and heart without triggering symptoms. If any symptoms such as headache, dizziness, or nausea worsen during exercise, stop immediately and return to rest until symptoms improve[2].
Exercise progression should be gradual and symptom-guided. Start with low-intensity aerobic activities and slowly increase duration and intensity over days or weeks. Avoid contact sports or exercises that involve sudden movements or risk of falls until fully cleared by a healthcare professional. Resistance training and more complex sport-specific drills should only be added in later stages of recovery, typically after symptom resolution and medical approval[2].
Strengthening the neck muscles can also help protect the head during physical activity by stabilizing it and reducing excessive movement. Simple neck exercises such as isometric holds (pushing the head gently against resistance without moving it) can improve neck stability. These exercises should be done carefully and progressively, ideally under supervision or with guidance from a physical therapist[1].
It is important to listen to your body and avoid pushing through symptoms. Persistent or worsening symptoms require evaluation by a healthcare provider experienced in concussion management. They may recommend additional therapies such as vestibular therapy for balance issues, cervical physical therapy for neck pain, or aerobic exercise tailored to your condition[3][4].
In summary, staying safe during light exercise after a head injury involves an initial rest period, gradual reintroduction of low-impact aerobic activities, avoiding symptom provocation, and incorporating neck strengthening exercises when appropriate. Always follow the advice of your healthcare provider and report any new or worsening symptoms promptly.
Sources
https://kinvent.com/blog/neck-training-for-concussion-prevention/
https://www.uofmhealth.org/our-care/specialties-services/concussion-athletes
https://www.buffalo.edu/pss/news-home/gen_news.host.html/content/shared/university/news/ub-reporter-articles/stories/2025/12/leddy-editorial-concussion-primary-care-guidelines.detail.html
https://acsm.org/rest-slows-recovery-after-concussion/
https://www.droracle.ai/articles/529665/what-is-the-standard-protocol-for-managing-concussion-symptoms
