hey,
once you get to school and immerse yourself in everything, you will have a better feel for how to study/manage certain classes. with histo, everything you need is pretty much in the lecture manual. sounds easy, but there is a lot of detail...a lot of which can not be overlooked (ie: whatever you may think sounds too detailed most likely isn't, and you should know everything cold)...physio is a combination of lecture notes and your own notes/scribes. its all do-able, just have to take the time to really learn. as opposed to college where it's easy to just pass with a C, you really have to work to even just pass. but like i said, all definitly do-able as long as you keep organized and plan ahead
best of luck!