I need more cardio - I build muscle easily and tend to bulk with consistant heavy weight routines, so I've been doing more Circuits/Total Body workouts. I will toss in a week of heavy weights to shake things up every now and again - or I'll do a 3 to 4 week rotation with heavy weights, but I do better with Circuits/Total Body. Oddly - my strength has not lessened. I used to do a lot of heavy weights, and I have all of my charts with the weights I used - I'm at the same or heavier when I lift heavy now. go figure.
I'm doing a modified August '05 rotation - which is pretty tough. But here's what I'm doing (I like to do high impact every other day, so I have been subbing Spinervals for the cardio only days):
M - BODY MAX.
T - Spinervals - Zoot Challenge and rolling hills of Hillacious
W - HSTA with KM Leg Sculpting drills
R- Imax Two (or Spinerval) plus segment three of Core Max
F - BodyMax 2
S - Bike/Hike
S- off