Final answer:
Customers anticipate a range of programs tailored to assist in achieving their fitness goals, which can include structured weight-lifting regimens and regular performance assessments to track progress against expected outcomes.
Step-by-step explanation:
Customers expect a variety of programs that will help them reach their fitness goals. When a personal trainer designs a weight-lifting program, this not only includes the progression of weights lifted over time but also involves regular assessments to see how well client performance matches the expectations. Information on students' preferences and program evaluations can help in refining these programs further. For instance, differences in outcomes, such as weight lost, can be attributed to individual variability, including metabolic differences, dietary adherence, recovery, and genetic predispositions.