No excuse - just go ride!
If you're ever near Coeur D'Alene, let me know - there's an excellent, long trail system there.
Working out is great, but I find that I need to be doing something fun in order to stay motivated. Picking things up then putting them down again is just too boring for me.
I've been working on Leg Blasters, getting prepped for ski season. 20 lunges, then 20 squats, then 20 jump-lunges, then 20 jump-squats. Rest 60 seconds, rinse, repeat. If you can make it through 3 sets, you're doing very very
good. Helps build explosive leg muscles to offset the lean muscle of cycling. Then do Burpees (yep, you read that right): as many as you can do in 30 seconds; rest for 30; go again; rest for 30... do this for ten minutes, and you've done ten sets. This is an excellent way of getting your core worked with minimal time commitment.