B767 Flight Attendant reported the over wing exit jumpseat does not allow tall individuals to brace properly in case of an emergency.

Narrative

Jumpseat Issue: Risk of Flight Attendant Injury or IncapacitationI was working position 5 on the B767 where my assigned jumpseat was OWE (Over-wing Exit). I am over 6 feet and due to my height; I was unable to get into proper brace position because the bulkhead wall in front of the wall is too close to the jumpseat. My knees were pushed up against the bulkhead wall and I could not get my feet under my knees. My feet were pushed back underneath my legs in an uncomfortable position that made it hard to even have my foot flat on the floor. This is a safety concern because I am unable to get in proper brace position. I felt unsafe and feared that I would be incapacitated during an emergency. In my professional opinion as a dedicated safety professional; I have concerns that this issue would cause injury and more likely incapacitation to the flight attendant. Flight attendants who are unable to get in proper brace position; are at higher risk to be injured/incapacitated. This conclusion is based off of my experience in this jumpseat as stated above.