Apple Digital Fitness Companion System?

The first segment of the interview process would poll the user on their fitness goals, desired activity level (moderate, advanced), fitness interests (such as jogging, pilates, and swimming), fitness goals (lose weight, firm and tone, and get back into shape), weight goals, desired workout schedule, and so forth.
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Once the interview process is completed, the computer-based application would create a profile of the user and a workout regiment based around their feedback on goals and fitness interests. For instance, a user interested in weight training would be provided a work out schedule broken down into warmup cardio exercises and a weight training session comprised of sets, reps and weight levels.

The iPod or iPhone would then guide the user through their training, with the possibility of adding additional hardware sensors to track progress.