1. How do you sit?

Sit up straight on your chair with your back against the backrest. Which of these best describes you? 

I can place my feet flat on the floor, and my upper legs are then horizontal (in line with the seat of the chair)
I can place my feet flat on the floor, my upper legs have less or almost no contact with the chair, and my knees point upwards.

I can’t place my feet flat on the floor, or can do so only with difficulty.
With my upper legs horizontal, I rest my feet flat on the footrest.