Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Q: If you are not in really good shape this is a great product to get ready for P90X. It does get kind of boring because you are doing the same workouts every other day, but they do work. It is only about 30 mins but it is amazing how well it works.

A: Positive
****
Q: On a number of occasions, it had been suggested that I read this book, and I must say I'm very glad I did. I got very involved, as the writing was so wonderfully descriptive. Having said this, I don't think it was arduous to read all that detail, which sometimes makes reading a book feel a bit of a chore. I would recommend it to anyone!

A: Positive
****
Q: Pretty much just a business woman's Harlequin Romance.Sex scenes in a book cover you're not 100% embarrassed to be seen reading in public.

A:
Negative
****