| Clue | Source | Date |
|---|---|---|
| Core muscles to die for | LA Times Daily | 21 Oct 2025 |
| Result of slaying it at the gym | LA Times Daily | 10 Jan 2025 |
| Fitness model's "six-pack" | Eugene Sheffer | 24 Jun 2024 |
| Core feature of a weightlifter's body? | Universal | 22 Jul 2023 |
| Core workout goal | Universal | 08 Jun 2021 |
| *Muscle Beach six-pack | Wall Street Journal | 20 Jul 2020 |