Vigor Inexplicable Dropping

[fstsrm]

I've recently seen my vigor drop significantly with no apparent reason. I rest at a city and it moves to 'fresh' then i go purchase something and i return to my crew screen to find it is back to fatigued.

There is no Endurning effect in play.

My crew consists of:

15 slaves 10 workers 5 scouts 24 Outriders and 60 mounts 0 beasts of burden. Am fully mounted.

Any ideas as to what i causing this behaviour?

[greegarak]

After pressing 'V', in Effects' bookmark, is there anything or all is black?

[fstsrm]

I worked it out. I had the 'Course of Spirits' (-1 Vigor during camp) affliction in effect!

Thanks for the help @greegarak, much appreciated