Returns the trainee's recorded body measurements over the given date range — one entry per recorded measurement, ascending by date. Covers every predefined type (circumferences, body-fat, and WEIGHT) as well as the trainee's own custom types: a custom-type entry has type: "CUSTOM" and a populated customTypeName. A day on which several types were logged yields several entries. Days/types without a recorded value are omitted (the list is not padded). Both from and to are inclusive. The range may not exceed 1 year (366 days); pull longer histories with successive ranged requests. When no measurement was recorded in the range, the response is 200 with entries: [] and a human-readable message.