Do your shoelaces always come undone? Do your shoelace bows sit vertically instead of across the shoe? If so, you're probably tying a "Granny Knot", and one simple change to your technique will result in a balanced knot that sits straight and stays secure.
This page explains the "Granny Knot" phenomenon in some detail:
http://www.fieggen.com/shoelace/slipping.htm
This page above is quite extensive and presents a lot of information on the "Granny Knot". If you'd prefer a simpler video presentation:
This video explains the "Granny Knot", demonstrates how it sits crooked and comes undone more easily, and shows the simple solution to turn it into a balanced knot that stays secure.
This page explains the "Granny Knot" phenomenon in some detail:
http://www.fieggen.com/shoelace/slipping.htm
This page above is quite extensive and presents a lot of information on the "Granny Knot". If you'd prefer a simpler video presentation:
This video explains the "Granny Knot", demonstrates how it sits crooked and comes undone more easily, and shows the simple solution to turn it into a balanced knot that stays secure.