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

[Q]: Over the winter, i seem to gain alot of weight. As a high school quarterback, that is not acceptable. Last summer, i think i went from 160 to 150. That's my gross weight loss. I'm not even talking about how much fat i lost. I gained a good amount of muscle over the summer, so i probably lost over 15 lbs of fat. I got my six pack back, and life was great. After the season, i just quit, and now my six pack is back in the fridge. I'll probably order some up next week and start again. These are great, and the results are amazing.
[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]: I contacted Anchor Hocking and they said that they do not recommend liquids over 160 F degrees to be placed in these mugs. Other reviews seem to imply that people do put boiling liquids in the mugs, but the company does not seem to sanction this use.I have had glass mugs crack on me before because I was not as careful as I should have been in reading the advertised claims, so I am now very carefull. I passed on this product, although they certainly do look beautiful.
[A]:
Negative