Natural Pilots
For stick and rudder skills one needs to have above average muscular co-ordination together with a high sensitivity to small accelerations. Throw in good depth perception and you are a natural. Sensitivity to small accelerations usually leads to air sickness if you are not doing the flying yourself.
During WW2 selections for aircrew often included tests for giddiness in the MISTAKEN belief that pilots should not get giddy.
Never be ashamed of air sickness when not flying yourself as that sickness is a positive for sensitivity to those small accelerations which are so useful in enabling you to fly smoothly and as one with your aircraft.