Typically, a concussion can be recovered in about one to two weeks, and sports such as running can be performed after recovery. However, the exact amount of time you can play sports varies from person to person, depending on how well the patient has recovered.
A concussion is a short-term brain dysfunction that occurs immediately after a blow to the head and can lead to confusion and loss of consciousness for a short period of time, lasting several seconds or minutes. It may be accompanied by headache, dizziness, nausea, anorexia, and amnesia.
Concussions generally require no special treatment and recovery usually occurs after one to two weeks of rest, during which time rest should be taken and activity should be minimized, especially avoiding strenuous exercise. After recovery, running and other sports are usually possible, but care should be taken not to over-exercise.
Since different patients have different recovery speeds and conditions, it is recommended to consult a medical professional on how long it will take for you to be able to run and do other sports.