How can we explain this in a scientific way? As far as I understand, your body will stay balanced if the projection of your center of gravity to the ground is still between the area covered by your legs (figure given to illustrate).

However, Kyrie Irving is obviously inclined here, and from what I know you can't hold a structure inclined by just the internal forces (correct me if I'm wrong), and that internal forces in this case is human muscle. Even if we bent down, we slightly move our buttocks behind, thus making our CoG stays within the area.

How is this possible? Free body diagram explaining this will be nice.

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Video of him doing it: https://www.youtube.com/watch?v=FyDhSa4qJbQ

  • $\begingroup$ "How is this possible?" It's not. Notice the video has many occurrences of people blocking the view and his left hand goes out of frame on the sideways lean. Heavy weights low down on his body would be my best guess and possibly a helper in the sideways lean. As you suspect, once his centre of gravity (CoG) goes past the support point he should fall over. $\endgroup$
    – Transistor
    Commented Sep 18, 2021 at 13:48
  • $\begingroup$ Could also be a photo just before he steps forward to catch his fall. $\endgroup$
    – Eric S
    Commented Sep 18, 2021 at 15:35
  • $\begingroup$ It' magic! $\endgroup$ Commented Sep 18, 2021 at 20:02
  • $\begingroup$ Yeah, the trick, or the magic, is on the shoes. $\endgroup$
    – r13
    Commented Sep 19, 2021 at 1:43
  • 1
    $\begingroup$ This trick can also be done with a clear and effectively invisible fishing line supporting him, either from above or from behind $\endgroup$
    – Pete W
    Commented Sep 20, 2021 at 13:35


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