>>14028280its also good for your neck to not be looking up and in my experience it encourages slightly better posture. tilting my head up encourages slouching by back and rolling my shoulders forward, possibly to counter the weight imbalance. i also suspect that moving your eyes mostly at horizontal or below horizontal is also better for your eyesight but i doubt theres any convincing research on it either way.
also OP this board is for 18+