It is important that your saddle is level and well centred. To centre the seat, place a flat horizontal object on the seat and compare the edges to a horizontal levelled sight line such as a window sill or the top of a building. Most cyclists do fine on levelled saddles, however if you experience discomfort tip the saddle slightly up or down (no more than 2-3 degrees). Commonly, men prefer it tipped up while women prefer it tipped down slightly. While adjusting the levelling of your saddle, ensure that it is centred on its rails over the seat post.
SEAT HEIGHT ADJUSTMENTS:
The easiest way to adjust one’s seat height is to mount your bicycle on a trainer and do it yourself. To get the optimum seat height, place your heels on the pedals and pedal backwards. An indication of the optimum seat height is when your legs are completely extended at the bottom of the pedal strokes with your heels on the pedals. You seat is too high if your hips rock while pedalling. You can mark the position on the seat post once you’ve identified the best suited height with electrical tape or a marker, for future reference.
If you don’t have a trainer, you can use the help of a friend to hold the bicycle near a doorway when you mount it. Make sure there is something to hold onto, though.
Another way to adjust the saddle height would be to raise it to the level of your hip bone, this is effective and usually the optimum height. You can adjust this if necessary.