Originally Posted by
Radux
Well, to start, don't work one muscle group more than once every 48 hours. You need time to recover and rebuild the muscle you broke down from working out.
Second, don't spot train. Working one muscle group just because you want a bigger chest won't work. Do exercises that work multiple muscles (like pushups and pullups) opposed to one muscle (like curls only working the bicep).
And eating healthy will tend to give you better results than pure workouts. Most fat loss (not necessarily weight loss, this works for toning too) comes from diet. I'd say it's 75% diet and 25% workouts.
Also I usually recommend interval training, even for lifting. This is especially true if you're just toning (high rep low weight). Resting ~30 seconds or less between sets is what I usually have clients do.