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.

Are Your Relationships Making You Fat?

Are you constantly surrounded by temptation? Can’t say no to those fattening lunch dates, or those home-baked pies from your mother-in-law or to the huge box of chocolates from your partner? The diet is hard enough without high-calorie foods being pushed in your direction. How can you stick to your resolve?

WebMD experts offer five simple strategies to help you stick to a healthy eating plan (even when you're surrounded by non-dieting friends and loved ones).

1. Make a Statement. It’s up to the dieter to make his or her feelings known. Directly ask your loved ones not to give you food as gifts or eat in front of you. No matter how strong you are, you can't stare fattening foods in the face every day without your willpower breaking down.

2. Keep Temptation Out of Sight. Even if your loved ones agree to eat their fattening goodies when you're not around, ask them to keep it in a cabinet where you don't normally go for your diet foods - you'll be less tempted to eat it.

3. Learn the Art of Substitution. Give yourself a taste treat of your own by preparing a less-caloric dessert that captures some of the essence of what your family members are wolfing down. Be creative and you'll find that watching others eat the goodies won't be so hard.

4. Share the Health. Make the foods that everyone craves in a more healthful and calorie-conscious way. Use no-fat yogurt in place of mayonnaise, use skim milk instead of whole milk, make lasagna with low-fat cheese. Creating a low-calorie shopping list will also help. Choose baked chips instead of fried, popcorn instead of cheese doodles, diet soda instead of regular, you will be helping everyone.

5. Be Reassuring. Even when they say you look good the way you are, reassure your partner that your weight loss goals are driven by health, not vanity, and that losing those extra pounds will help ensure a better future for both of you. Explain the serious health risks involved in being overweight.

No- you’re not weak-willed. You’re human. Just don’t let those around you get the best of you. Follow these five easy steps and you won’t fall off the weight loss wagon.