The theories of influence loss are attractive simple. Consume fewer calories than you use. Combine cardio and weight workouts. Eat healthy. Let alone the fatty foods and so on so out.
So, what makes it thus hard?
Implementation. It’s operating these perceptions to is difficult. Take less requires sacrifice. Most people are in the behavior of having what the minds desire. Cakes, ice cream, pizza and all the other comfort foods get people happy. Giving up these large calorie foods means sacrificing short term joy and nobody likes of which.