| RPE | Activity | Talking Ability |
| 1-3 | Sitting on a chair | Casual talking |
| 4-5 | Easy run | Can sing a song |
| 5-6 | Normal run | Comfortable conversation |
| 7-8 | Hard workout | 2-3 sentences before needing to breathe |
| 8-9 | Very hard workout | 5-7 words at a time |
| 9-10 | Extremely hard workout | single word |