Embodiments of the present invention are directed towards a system and method for determining an extent of concussion experienced by a user. The method includes receiving, by a computing device, electroencephalogram (EEG) data related to the user from an external device associated with the user. The method further includes determining, by the computing device, the extent of concussion based on the EEG data, displaying, by the computing device data related to the extent of concussion. The method further includes determining the extent of concussion based on the EEG data related to brain activities of the user before the user is concussed, during the time of concussion, and after the user is concussed. Embodiments of the present invention further helps in developing technical skills in the users during training apart from helping them realize or visualize the concussion and impact of the concussion during training or while participating in athletic activities.