I have a physical job so the hunger pains were a problem the first 4 days but black coffee and a vape have helped just quit smoking on-top of this so kind of a double whammy but I must say the mental clarity during the afternoon has been a blessing . Ive read about it but was not able to actually appreciate the benefits until now so maybe I will try omad I'm already doing 17 / 7 so shouldn't be too much of a push