Day 0 (initial state) ————————————————— amount of B1 (mg/day): 0 amount of magnesium (mg/day): 0 speech (1 worst - 10 best): 4 speaking situations (1no situation - 10 a huge amount of situations): 3 well-being (1 - 10): 3 (i have a cold) short summary about the day: The day before the start of the experiment. I had less conversations today, but at the few conversations i speak not good.