Thanks to the audio lectures for the ACE certification personal training test, I passed this morning! The lectures really allowed me to focus in on studying and getting extra time in while driving (I drive a lot), was a HUGE help. I ve taken the test a couple times before with light studying (half-hearted attempts). Buying the audio lectures was the best thing for me! The audio lectures were great for driving but also for focusing and sitting with the book. Definitely recommend to anyone looking for extra study help.