Meninges cover the brain and spinal cord. Meningitis=inflammation of the brain and spinal cord
You should wear tight compression outfits to decrease the possibility of drag, especially in an olympic race. You could even wear a swim hat to lower drag from your hair.
Don't really worry about pushing too hard, it's even ok if you were to break a rib or two. it's better to push too hard than not hard enough
Cardio because it raises your heart beat and keeps the heart beat for a period of time.
