Agreed that you are tall, still you need to sit in your car, place your hands on the steering at 10:10 and observe whether your hands are lower or higher than your heart. I am sure your hands will be higher if you do not adjust the steering (lowering the steering, hope your car has adjustable steering).
Moreover, looks like you missed an important point of load on your palm and arms. One's arms are almost fully stretched out, if one uses 10:10 position. The angle at the elbow is close to 180 degrees. Now while sitting on the driver seat, move your hands to 9:15 position, the angle at the elbow will be lesser if compared to the angle at 10:10 position, and the angle of the elbow is even lesser at 8:20 position. It gets closer to 90 degrees.
Now do a simple test - forget the car and sit on a chair in a room (or you can do this while standing also), stretch your hands fully and parallel to ground and observe in how many seconds/minutes you feel the arms tiring. Then, bring your hands closer to your body a little bit. The elbows will bend. Now, again observe in how many seconds/minutes you feel the arms tiring. The again bring your hands a bit more close to your body and observe again.
My observation is that arms get tired faster in position number one, when they are fully stretched out and get least tired when they are closer to our body, position number three. At position number three, the angle at the elbow is closer to 90 degrees.
I think you have never tried other positions of your hands on a steering and that is why you do not know which one is more comfortable and less tiring.
By the way, after your last response, I sat on the driver seat of my car. I had already adjusted my seat to the highest level the day I bought it. My hair touch the roof of my car. I put my hands on steering at 10:10 and observed that they were higher than the level of my heart. So, even if you are tall, still your hands will be at a higher level than your heart, provided you do not adjust the steering. (Although my car does have adjustable steering, I have never adjusted it. )
Sun, can we stay on the topic of 'how to hold the steering properly', please?
When you talk, you are only repeating what you already know. But if you listen, you may learn something new!