Proper equipment, safe play, and immediate medical attention can help prevent concussions in sports. Wearing properly fitted helmets and safety gear reduces concussion risk, but does not eliminate it since head impacts can still cause the brain to hit the skull. Learning proper technique and avoiding dangerous plays makes injuries less likely. If a head impact occurs, stop playing immediately and see a doctor within 3 days if concussion symptoms appear, as a second impact can have severe consequences. Coaches may perform sideline testing to check for concussions, and baseline concussion tests are often used for comparison.