Quote (dgkblack @ Apr 19 2012 12:29pm)
How does cardio exactly prevent fat gain during a bulk?
If I was to incorporate 30m of cardio after my workout while bulking, would that reduce fat gains?
Here is the basis of fat gain during a bulk.
In order for the body to create as much muscle as possible, you have to be in a state of anabolism. This means you generally have to have a surplus of calories, with a sufficient glycogen supply and also plenty of protein which are broken down into essential amino acids.
In order to lose fat, your have to have a deficit of calories and generally a lower storage of glycogen. This puts your body into a state of catabolism. As a result, it is very hard to blend muscle gain and fat loss.
However, there IS a way to gain slowly and lose fat slowly. On days that you do strength training, you will have a 500 calorie surplus (for every 1 hour of strength training beyond the first hour, add 500 more calories). On days when you don't strength train, subtract 500 calories from your base diet. On those days that you are not strength training, do some cardio for increased fat burning.
This will cause your body to be anabolic on training days, and catabolic on non-training days. Your overall outcome will be very slow muscle gain and very slow fat loss. I do not recommend doing this, as I prefer bulking and cutting cycled on and off throughout the year as necessary.