When you are doing certain movements in martial arts like kicking, you bring your arms up in order to balance yourself. Bringing your arms upwards also moves the center of mass (COM) upwards but if the COM is higher than the position should be less stable and not more stable. How do you explain...
What is the consequence of the center of gravity passing below the rod in the high jump? Fosbury flop.
Which equation is responsible for a bike being more stable the faster it's driven? and in rotating things in general being more stable the faster they're rotating.