In addition to the slimming factor generation 3 psychological discomfort, we may actually feel ill or just plain hungry. Lack of food in the quantity we are accustomed to can make us anything from uncomfortable to surly to downright mean.
Another complication is that simply restricting foods seldom works for a variety of reasons too varied to go into here. However, cutting calories beyond certain levels is often contra-productive and may actually contribute to ill health and/or later weight gain.
Increasing activity is probably going to be important for healthy slimming factor g4 weight loss, but, just like exchanging our old bad eating habits for a new lifestyle of healthy eating, there will be physical and psychological obstacles to overcome. In fact, the very idea of having to...well, you know...exercise, can turn people off before they ever actually do it. There is such a strong negative reaction to the idea of "exercise" in some people that some texts on fitness, health, or weight loss will actually go to extremes to avoid using the very word for fear of losing their audience.