| Endurance | 9/10 | A 39-minute EMOM alternating 1 minute of Row, 1 minute of SkiErg, 1 minute of Assault Bike, followed by 1 minute of rest, aiming for consistent calories each work minute. This is an extreme test of sustained aerobic capacity and pacing across three different monostructural machines. |
| Stamina | 8/10 | Sustaining consistent calorie output on three different machines for nearly 30 total minutes of work (across 39 mins) will heavily tax full-body muscular endurance, particularly legs, core, arms, and back, depending on the machine. |
| Strength | 3/10 | While not a maximal strength test, generating consistent power on the machines requires a baseline of strength, especially to maintain output when fatigued. Focus is on strength endurance. |
| Flexibility | 2/10 | Basic mobility for rowing, skiing, and biking mechanics. |
| Power | 5/10 | Each stroke/pedal/pull requires power. The challenge is sustaining a specific power output (translating to calories) consistently over many minutes and across different modalities, rather than peak power. |
| Speed | 4/10 | Maintaining an efficient stroke/pedal rate to hit target calories is key. Pacing to ensure consistency across all work intervals and all three machines for the entire 39 minutes is paramount. |