Hello, I lost concept of time today after a workout. I didn t know what day it was and although i was told it was Thursday, I couldn t estimate how long before this weekend. It as if time meant nothing to me. I do take amphetamines and I wonder if perhaps being dehydrated or having low blood sugar can cause confusion like this. I did drink plenty of fluids during the day and during the workout too, but I did sweat quite a bit.