I'm in college and I haven't taken Biology or A&P since high school (I'm almost 23 now). However, I took the exam last week and got 92%. I used the official Elsevior study guide, a McGraw Hill Practice Test booklet, and I googled quizzes for each section. I used online quizzes that weren't related to the Hesi at all and they actually helped. Try searching things like "basic physics quiz". You can also look into websites such as Khan Academy if you really don't understand a concept. Good luck!