did anybody else experience lethargy? i'm on day 19. did 10 first week, did 20 second week, today being the fifth day at 30. jeez, today was unbearable, feels pretty similar to the flu in ways alright. appetite is gone, nausea, (carbs have been 40+% of 4kcals/day)tired as hell, body feels uncomfortable in general. backing off to say the least. had originally planned on phasing into sd for last couple of weeks.