Is it better to turn left or right on the stairs of the house

The spiral stairs of residential buildings are usually left-handed. But this is not fixed, mainly depends on the layout of the room. Under the premise of not affecting the layout of the room, the left-hand staircase is usually used, because the handrail of the left-hand staircase is on the right side, and the right hand is usually more powerful than the left hand, while the spiral staircase of residential buildings is generally narrow and has a large rotation range, so it is easy to step unsteadily when going upstairs, so holding the handrail with the right hand is more stable than the left and right, which can ensure safety.