It is an issue of harmonic vibration. So lots of thing change the equation, including speed, weight distribution etc.
Make sure everything is adjusted correctly. If the wobs happen, press a knee into the TT. Or HTFU and accelerate.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.