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  "path": "/wellness/workouts/no-not-planks-or-sit-ups-heres-the-one-abs-exercise-you-need-for-elite-core-strength-and-stability-without-weights",
  "publishedAt": "2026-05-17T06:45:00.000Z",
  "site": "https://www.tomsguide.com",
  "tags": [
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  "textContent": "Hollow knee tucks are a bodyweight exercise that strengthens your core and hips without hurting your spine. Here's how to do them.",
  "title": "No, not planks or sit-ups — here's the one abs exercise you need for elite core strength and stability without weights"
}