I noticed that during isolation for positive COVID 19 that my BG levels were some of lowest they been consistently throughout the period. I was not exercising so it was not down to that, i also was not drinking alcohol or caffeine. I returned to work and started to drink coffee again and results went up again. This weekend limited caffeine no alcohol and lower again. Even in the weeks I don't drink alcohol during working I notice BG still slightly higher then weeks with no caffeine and no alcohol. Has anyone noticed anything similar? If so is there any science behind it?