A sideways or lateral movement resembling a crab's characteristic gait.
From 'crab' plus 'sidle' (from 17th-century English 'sidle,' possibly from 'side'). This combines animal movement with directional terminology.
Crabsidling appears in sports training worldwide because it strengthens lateral stabilizer muscles that normal forward movement ignores—coaches borrowed the crab's biomechanics for human fitness.
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