Probably man flu.
Morale was really good last season maybe 1/2 boosters per day.
This season same players seem to be losing it faster, booster every three days.
Nothing much different only no win bonus, used only in one match this season, CL which we drew.
Last season every game carried a win bonus.
I'll give it a few more days if results still remain convincing I may leave them off, if not they go back on and then see how morale is affected.