| Clue | Source | Date |
|---|---|---|
| Tough exercise program: Abbr. | Commuter | 25 Dec 2025 |
| Fitness method: Abbr. | Commuter | 16 Apr 2025 |
| Workout protocol with quick, taxing bursts, for short | ||
| Exercise protocol with quick bursts, for short | ||
| Orangetheory alternative | ||
| Workout that consists of a strenuous exercise followed by a recovery period: Abbr. |