Amazing Olympic Events

The Olympics are moving further away from the capabilities of regular people.   I remember 20 years ago or so when we were awed at the performance of Nadia Comenici of Romania in woman's gymnastics  as she performed amazing feats on the unparallel bars and the vault.
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A look at her routine vs. the current competitors makes Nadia look almost pedestrian.... a truly amazing development.
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I was also watching the 10 meter synchronized platform women's diving  and have no conception of how these athletes twist, twirl, flip, and enter the pool in perfect identical motion.
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How the hell do they do that?