| RPE Level | Description |
|---|
| 1 | No exertion at all, complete rest. |
| 2 | Extremely easy; can maintain for hours; minimal effort. |
| 3 | Very light; feels like a comfortable walk; very easy to maintain. |
| 4 | Light; good for a warm-up; can hold a conversation easily. |
| 5 | Moderate; more challenging but still manageable; conversation possible with some effort. |
| 6 | Somewhat hard; conversation requires more effort; noticeable fatigue. |
| 7 | Hard; conversation difficult; significant effort and fatigue. |
| 8 | Very hard; conversation not possible; close to maximal effort. |
| 9 | Extremely hard; near maximal effort; no conversation possible. |
| 10 | Maximum effort; unsustainable for long period; no conversation possible. |
