What to do during rest week?

Often it's good to completely disengage, relax and come back completely fresh.  And that's not necessarily being "unproductive" 

During down time due to injury, or weather.......2016 would do calf raises on the stairs, at home. He swims, so would go to the local indoor facility and use a kick board, or fins.........depending on what he was "nursing"

He also would do a lot of slow motion work on pitching and hitting, in front of a mirror......just breaking everything down into the smaller parts.

Ron Polks book is great for the mental game.

And he loves yoga when he is injured.

Sometimes ya just have to shut it down but there is always something you can work on.

Based on the nature of your injuries, I like yours and Truman's thoughts.  Mental game book or complete refresh.  Both those types of injuries can be nagging if not completely rested/healed.

If you're not sure what the back issue is, you should get that checked.  Did you utilize the school trainer to assess the back?  If it is something slightly out of place as opposed to a strain or pull, a good trainer and/or chiro can make adjustments that can be quite effective.

Thanks for the responses, guys! I'll check in with my school trainer to see what he thinks about my back, and besides that I might just lay low a bit - completely disengage. But if I'm really wanting to do something, I'll read some 

Get caught up and focus on your classes. You will find that your grades will mean as much as your baseball skills when recruiting begins.