Gee, I haven't lost 10 inches off any one area of my body by losing 77 lbs. (which has taken over 10 months to do).
I don't think losing 5 inches off ANY one area of your body can be done in 45 days, unless you were extremely obese, and I mean extremely.
At least if we are talking a true loss (not any of those temporary tricks we have all read so much about). Even my Spanx wouldn't give me a 5 inch difference
Many people that say they lost 10 inches in a month mean that they lost a total of 10 inches. They measure many areas of their body and add up all the numbers to get to that 10 inches.