Try to make sure I get through 1l during work... then as far through another litre afterward.
If I don't do the litre at work, I REALLY feel it. Have had a running debate with my father about how much dehydration affects you for the last few years.... he refuses to believe that if he drank more he'd be less fucking argumentative. I can feel it every single day... I'm more likely to have conflict at work, more likely to have conflict with my partner, more likely to get stressed and more likely to say "fuck it" when presented with an obstacle.