Why You Should NOT Try to Isolate Muscle Groups When Weight Training

Working as a fitness professional, there is one type of question I get all the time that shows that many people are missing the big picture regarding the benefits of strength training. This popular question usually goes something like this:

"What exercise can I do to isolate my ... (insert your muscle of choice – abs, quads, biceps, triceps, etc)?"

It doesn't matter which muscle someone is asking about, they always seem to be asking how to 'isolate' it. My first response to this question is always – Why in the world would you want to isolate it?

The first thing I try to teach my clients is that the body does not work well in muscle isolation. Rather, it works better in movements along a kinetic chain; that is, large portions of the body assist other portions of the body in completing a complex movement. In fact, there really is no such thing as true muscle isolation. There is almost always a nearby muscle group that will assist in some way with whatever movement you are doing. However, this article compares attempting to 'isolate' body parts via single-joint exercises to the much more effective strategy of performing multi-joint complex movements.

When you attempt to 'isolate' muscles by performing single-joint exercises, you are actually creating a body that is non-functional and will be more prone to injury. Essentially, you are creating a body that is a compilation of body parts, instead of a powerful, functional unit that works together.

Now if you really want to end up hobbling around in a body bandaged up with joint problems, tendonitis, and excess body fat, then by all means, continue trying to 'isolate' body parts. On the other hand, if you would rather have a lean, muscular, injury-free, functional body that works as a complete powerful unit to perform complex movements (in athletics or even everyday tasks), then you need to shift your focus away from muscle isolation. Believe me, focusing on how well your body functions will give you the side effect of a body that looks even better than it would have if you focused on muscle isolation. For example, take a look at the physiques of any NFL running backs, wide receivers, or even world class sprinters. Trust me when I say that these guys pretty much NEVER train for muscle isolation (their strength coaches wouldn’t be crazy enough to let them), yet they are absolutely ripped to shreds! Just look at guys like Maurice Green or Terrell Owens and tell me who wouldn’t want a physique like those guys.

Another benefit to moving away from the 'muscle isolation' mindset to a more 'complex movement' mindset is that you will find it much easier to lose body fat. The reason is that by focusing more on multi-joint complex movements as opposed to single-joint muscle isolation, you not only burn a lot more calories during each workout, but you also increase your metabolic rate, and stimulate production of more fat burning and muscle building hormones like growth hormone and testosterone.

Let's look at an example. The machine leg extension is a single joint exercise that works mainly the quadriceps, can potentially cause knee joint instability in the long run, and doesn’t even burn that many calories. On the other hand, exercises like squats, lunges, step-ups, and deadlifts are all multi-joint complex movements that work hundreds of muscles in the body (including the quadriceps) as a functional unit, create more stable and strong joints in the long run (when done properly), and also burn massive quantities of calories compared to the single-joint exercises.

The 3 Core Muscle Building Exercises You Should Be Doing

When it comes to building muscle I like to keep things simple. It’s easy to get caught up in the hype of hot new products and exercises that promise to be the next best thing in muscle building. Theses fancy exercises and products use long “scientific like” words and explanations to show you they work to build the most muscle.

In this article I am going to get back to basics. I am going to show your three muscle building exercises you can’t afford not to do and why you should be doing them. These three exercises are the grass roots of building muscle and are essential for any serious training program.

You might find it hard to believe, but with these three exercises alone you can pack on a serious amount of muscle. I refer to these exercises as the “core” to any good program. When I start planning I muscle building program for a client I always start with these three basic exercises and build the program around them.

3 core muscle building exercises:

Squat

The squat is the biggest exercise for packing on serious poundage. There’s no argument about it. The squat is primarily a leg building exercise. You start the exercise with a barbell resting across your shoulders standing straight up. Then bending at the knees and hips you lower the barbell down until your thighs are almost parallel to the floor. And then push the barbell back to the starting position.

The main muscle groups pulled into action for the squat are your quadriceps, hamstrings and glutes. Secondary muscle groups include the lower back, adductors and to a certain extent your shoulder muscles. As you can see many muscle groups are recruited for this exercise making it the biggest exercise and biggest potential muscle builder.

Like all the core muscle building exercises, you should make the squat the first exercise you do on your leg training day. Because it’s the biggest exercise you want your legs to be fresh and ready. If muscle building is your goal, aim for about 8-12 reps on the squat. Because you’ll be lifting heavy weights a good warm up is vital. Squatting is very stressful for the lower body, especially the knees, so 5-10 minutes on the treadmill and some lights squats first up are recommended.

Bench Press

The bench pres is the king of upper body building exercises. For years the bench press has been used to measure a lifter’s strength. How many times have you been asked “how much do you bench?” I bet you’ve never been asked how much do you squat or how many chin ups can you do.

The bench is a simple yet extremely powerful exercise that targets the entire chest (pectorals), front shoulders (deltoids) and triceps. To perform a bench press you must lie on your back on a flat bench, grip the barbell at slightly wider than shoulder grip and press the bar straight down to your chest.

The bench press is the biggest upper body builder because it allows you to move the most amount of weight possible. This is its advantage over the dumbbell press. With the help of a spotter you can also push yourself to lift heavier weights. There are also other advanced bench press techniques like board presses, bench press negatives and chain presses. See our link at the bottom for more details.

Wide grip Chin Up

If you were only going to do one exercise to work your back this would be it. The wide grip chin up is the ultimate test of a lifters power to weight ratio. This muscle building exercise is very demanding on the body.

The wide grip chin up primarily hits the lats, but also targets the entire upper back, biceps and forearms. To execute this exercise you need a chin up bar or assisted chin up machine. Hold the bar in a wide grip (greater than shoulder width) with your palms facing away from your body. Start in a “hanging” position with your arms fully extended. Pull yourself up until your can get your chin over the bar and lower back to starting position.

Most people will not be able to do wide grip chin ups without some lat/back training first. You can use the assisted chin up machine or lat pull down machine to strengthen your lats before attempting wide grip chin ups. This is the most demanding back exercise you can do so it must be the first exercise in your session.

When you should be doing these exercises?

Like I mentioned previously in this article, these exercises are the biggest muscle builders and also the most taxing on your body so they must be done at the beginning of your workout to get the maximum benefits. I recommend that you do up to 5 sets on each exercise and vary the way you perform these sets each week. For example, the first week you do pyramid up sets, the second week you pyramid down and the third week you do straight sets. This keeps your muscles from getting accustomed to your routine. Good luck packing on some serious pounds!