My usual Climbing routine. Here's a link to the grades of difficulty in climbing (I use French Grades)
http://media.rockfax.com/2011/06/trad_grade_safe.gif
Also there are different types of ascent which I'll explain
Flash (Straight to the top without falling off)
Red Point (Fell off at least once)
DNF (You fucked it basically)
Start with 2 Green Tag (Medium-Hard) Traverses (Climbing Sideways) to warm up, then I'll choose a route to help with the warm up usually a 5 or 6a on lead (Clipping the rope in as you go up)
After the warm up I'll work my way up each grade. This is from my last session in order.
6a+ Lead Climb (Flash)
6b+ Top Rope (Flash)
6c Top Rope (Red Point)
5+ Lead Climb (Flash)
7a Top Rope (Flash)
7a+ Top Rope (Flash)
7b Top Rope (Red Point)
Then I'd finish off with some easy Boulder Problems. (Bouldering is climbing without ropes but with a crash mat beneath you. Short routes, explosive strength)
Usually I'd be knackered at this point but I try my best at the really hard problems and then cool down on some of the nicer ones
Climbing is hands down the best exercise you can do. If there's a climbing gym near you I'd definitely get yourselves down there, all climbers are stoners too!