How to Tie Your Shoes the “Strong” Way [VIDEO]

You may be thinking: "I know how to tie my shoes perfectly." I said the same thing myself until I watched this video. Now, according to the video, there is a "weak" and "strong" way to tie our shoes. After all these years of living a life thinking I have mastered how to tie a pair of shoes--apparently, I have no idea what I'm doing. Check it out. It's pretty interesting stuff. How do you tie your shoes--the strong or weak way?