Hey everybody. I'm 5'7" and 150 lbs. I'm just wondering if whey protein or some other supplement would be a good idea for me to enhance my workouts. I workout 4-5 times a week and usually run around 15-17 miles a week. I usually lift 45 minutes to an hour after I run too. However, I'm having problems plateauing or just losing my muscle mass and definition due to my high intensity and volume of cardio. So I'm just wondering if taking whey protein would be a good option for me to keep my gains and defintion. The only thing I'm worried about is getting bulky or being bogged down by perhaps gaining too much muscle or weight. Any recommendations on how many grams to take or any other ideas on supplements or diet would be greatly appreciated. Thanks.