Studying and focusing

How am i supposed to cram or study when all i can think about is if i can fit in a workout or what to eat or if to fast or how much i weigh???

I spent 2 hrs outside walking up and down my trail (walking workout) instead of studying for AP exams that are NEXT WEEK, i have 4 !!

and also i have no energy, i am so ANGRY about what this mindset is doing to me, i feel like a poser bc the issue is so unnecessary in the grand scheme of things and also in comparison to these tests bc they will give me college credit, so why is my mind doing this to me??

any advice? if anybody had to deal with this before?