| Answer | Crossword Clue |
|---|---|
| ABS | Sit-up muscles |
| GLUTEI | Muscles we sit on |
| ABS | Muscles worked in sit-ups |
| ABS | Muscles worked by sit-ups |
| PECS | Push-up muscles |
| TONE | Firm up, as muscles |
| TONES | Shapes up, as muscles |
| TONE | Build muscles, with "up" |
| TAUTEN | Tense up, as muscles |
| TONES | Firms up, as muscles |
| TONE | Build one's muscles, with "up" |
| TONE | Firm up, as one's muscles |
| PECS | Push-up muscles, for short |
