How can I adjust the bike seat to ensure it fits me properly?

To adjust the bike seat for proper fit, first, ensure it is at the right height by sitting on the seat with your foot on the pedal at the bottom of the stroke. Your leg should be almost fully extended but with a slight bend in the knee. Next, adjust the seat angle so it is level or slightly tilted forward. Finally, make sure the seat is positioned horizontally so you are comfortable and balanced while riding.