Q: how do i reduce wrinkles from my face thru eating properly and weight training? also, is too much cardio ever bad?

A: The question about wrinkles would certainly be much better answered by a dermatologist or a cosmetologist. I do have a little bit on input on it though... There's absolutely no doubt in my mind that the general clarity and appearence of your skin is very related to the quality of the foods that you eat. If you eat a ton of processed stuff stuffed with sugar and who knows what else, you can expect the results of that to appear on your skin as well as on your waistline. On the other hand, eat fresh raw veggies and fruits (organic if you can afford them) and see your skin clear up in addition to all the other health and looks benefits.

As to the other question, yes too much cardio can actually be bad or at least undesirable. The first reason for that is simple overuse of your muscles, ligaments, tendons, joints, etc. If you pound them day in and day out with a lot of cardio, things will eventually give. Knee, ankle, and lower back problems are all common for those who overdo cardio. Unfortunately there's no simple definition of 'overdo', but my advice would be to keep it under 5-7 hours per week if you don't do any other exercise (keep reading for when you do do other exercise). Some people can handle much more cardio without problems -- like I said, it's not a universal rule. A better advice may be to be on a lookout for early signs of overtraining and to cut back when they occur: miscellaneous aches and pains (other than the plain muscle soreness), insomnia, irritability, lack of appetite, lack of interest in exercising.

The second reason why too much cardio may be bad has to do with your body composition and the most effective way to lose fat and/or build muscle. If either losing fat or building muscle is your goal, then you should be focusing on having a good diet and a good weight training program and limiting cardio to just 1-2 hours per week. Please read this article for an explanation of why that is the case.