I train with weights about 3 times a week. Every training I do 2 muscle groups (except when i'm training legs) and during training I try to concentrate on the muscles I am working out and on doing the exercises in perfect form. I want my training time to be as effective as possible and don't want to waste time and spend hours in the gym every day. That's how I can do my weight training in three days a week and still have the best results. I usually train abdominals after training. I can either do a few abs exercises after each training or do them seperately on a specific day, either way it works for me.

My training schedule doesn't stay the same for long, I like to make some changes frequently so that my body doesn't get adapted to the 'routine'. Everyones body is different and everyone respond differently so there is no such thing as one perfect training schedule that works best for everyone (if only it were that easy). So with training and dieting I try to listen to the signals my body gives me and I play in on that.

But to draw a picture for you, my training schedule basically looks like this:

Monday: Legs
Tuesday: (cardio)
Wednesday: Back, biceps and triceps
Thursday: (cardio)
Friday: Chest and shoulders
Saturday: (cardio)
Sunday: Day off

I do cardio about 4 times a week. Depending on whether I have a competition coming up and how I want to alter my shape on a specific moment I could do more cardio. I usually do them in the morning on the days I don't train with weights or right after training.
On weekdays I am active doing weight training, cardio and working, but Sundays are my days off. On these days I just relax and enjoy my time off after a week of disciplined training.

To learn more about training and other fitness related topics see my articles on www.bodybuilding.com