| Scale | Definition | |
|---|---|---|
 |
0 | Completely normal |
 |
1 | Very slightly breathless |
 |
2 | Moderately breathless |
 |
3 | Hot and moderately breathless |
 |
4 | – |
 |
5 | Hot and somewhat severely breathless |
 |
6 | – |
 |
7 | Hot and severely breathless |
 |
8 | – |
 |
9 | – |
 |
10 | Couldn’t be more hot and breathless |
You should aim to work at a moderate level. When working at a moderate level you will be warm and short of breath to the point you would not be able to sing but still able to complete a short sentence. This equates to somewhere between 3 and 5 on the scale.
