I pay a lot of attention to overall feelings of well-being and I chart them frankly I on my calendar it's my are my workouts I put the level I put like L1 to 10 typically my workouts are in the six to8 out of 10 intensity I'm not measuring this by any kind of um device and if I get sick I tend to look back and say what was going on before I got sick you know um if I'm getting substantially weaker or I'm feeling uh fatigued I I I take stock of what's going on