What is the best workout and diet to tone up fast?

I am 30 years old, 5'5" and 110 pounds. The only workout routine I have ever really done is cardio stuff like running, exercise bike, walking on treadmill, etc. and sit-ups. I have never dieted but try to eat healthy for the most part...lots of salads, fruit, yogurt, vegetables, and calorie free beverages. I just started weight training but only do squats, lunges, bench press, and curls. I am not interested in losing weight, but I do want to get more defined and sculpted muscles. What exercises should I be doing more of, and what foods should I eat regularly to see the quickest results? Thanks for your help!

Disclaimer: I don't recommend any diet to you or anyone, but I just wanted to share my experience. You should talk to your nutritionist/doctor before making any drastic changes to your body.

Try core exercises (use Google). The routines you've been doing sounds fine.

Currently, I've been exercising on my "air-stepper" at home, and I get on it for 15 minutes each day to get my cardio workout. I take my pulse at 5 min. intervals for 15 minutes to see if I'm improving. ^_^ Then, I get on my Total Gym and start working on my arms and legs (pulling, pushing, etc.). To tone my abs, I do 200 crunches (I lay on my Total Gym at an incline, so it's VERY easy and no back strain!); they are much easier than sit-ups. ^_^ Lastly, I do 100 of those "standing-up" crunches. I don't know what to call them, but I saw it on Hip-Hop Abs. You can see a sample of it here: http://www.beachbody.com/product/fitness...

The lay down crunches and the standing up crunches that I do gave me the flat stomach I have now. ^____^ Very happy with the results. You can do as many as your body can tolerate for ONE day and feel your stomach flatter immediately afterwards (at least for me)! It's incredible!

If you do not have gym equipment, just jumping around and running place for 15-30 minutes will get you your cardio workout. Eat yogurt, fruits, and other health foods. Drink tons of water and your daily dosage of milk. ^_^

Good luck! :D

there is a video called 'callenetics' its from the 80's but it really works, like really works, its similar to yoga/pilate's etc..the idea of holdin a position and working on the resistance of the muscle,the video seems abit crap but it really works. :)