Final answer:
Peggy's difficulty in losing weight below 145 pounds is indicative of her 'set point weight' which is a weight the body stabilizes at despite efforts to change. Long-term weight management typically requires lasting lifestyle changes rather than temporary diets.
Step-by-step explanation:
The weight of 145 pounds that Peggy finds difficult to drop below is best described as her 'set point weight.' This concept suggests that an individual's body may resist weight changes and stabilize around a certain weight. Despite efforts to lose weight, such as dieting, many individuals find their weight returning to a particular set point after initial success. This is supported by research that indicates 80 to 90 percent of people who attempt to lose weight through dieting regain it eventually. Successful, long-term weight loss often involves permanent lifestyle and mindset changes regarding food and exercise, rather than short-term diets.
The weight of 145 pounds is best described as Peggy's stable weight or set point. It refers to the weight range that an individual's body naturally tends to maintain without extreme dieting or exercise. Peggy's body seems to have a natural preference for staying around 145 pounds, and it becomes difficult for her to lose weight beyond this point.