When a muscle is forced to respond to any type of resistance, an increase of blood flow to your muscles is developed. Strength trainers call this “the pump”. What you are actually doing to the muscles when strength training is creating small tears in your muscle fibers. If proper rest is achieved before breaking down your muscle fibers again, progress and GROWTH are the results.
I strongly recommend that you split your strength training and cardio or group exercise workouts on separate days which will help you achieve maximum results. Your muscles will thank you and lean muscle mass will be created much faster.
By Mike Kramer, General Manager of Steel Fitness, Bethlehem, PA