I spent six months or so studying for the Health Coach exam. I re-read the book, did the study guide, practiced flash cards, and did the practice test. About a month and a half before the test I made sure I was studying at least an hour a day. (I also think I have test anxiety so I was really nervous!) As mentioned above the test was REALLY hard. The information isn’t a whole lot of stuff from memory. Luckily I passed though! Good luck with your test and I totally agree, go in over prepared.