Well fry 'em, eat 'em, and get out there! It doesn't have to be a big exped. to Scotland or anything, just get down to the local climbing wall, or onto the local moors, whichever is closest to wherever it is you live, and get out a bit.
Sod school! Us kids don't care how long marks take to get back to us... when will you teachers realise this?! You are allowed lives!