So i encountered this problem when i was modelling this turtle guy and I dont know what to do, Short description of the problem: I Tried to hide the body to weaken the strain on my computer while modelling certain parts. how ever it doesnt seem that the body didnt get hidden… when i try to press ALT-H it doesnt disappear so something went wrong in the process. 
Please help
Use H to hide parts of mesh or use the Hide Masked option
Thanks a lot. haha it was this simple… X.x i guess the easier things are the easier it is to overlook those things ^^ thanks again.