I didnt need to lose 25lbs but I use it for 2 weeks every now and then if I am gaining a few unwanted pounds. It will strip 10lbs off you in the blink of an eye. I'd rather suck it up for 2 weeks then spread it out over 2-3 months. The key is that this will torch fat only. Once you get through this you will be hungry to do more. The fasting days will actually give you more energy and focus than you think. The whole blood sugar thing is total BS. I swear by this. I am a workout junkie. Its good to mix it up from time to time.