Now that the New Year is upon us, many people are looking for effective ways to regain the size and strength they might have inadvertently lost. After all, it's damn tough to stay on track with your training during the months when that jolly, red-suited fella who looks suspiciously like a wino shows up in the middle of the night. (No, I'm not talking about your Uncle Steve.)

For most of you, your posterior chain work was probably limited to deadlifting your inebriated grandmother off the linoleum kitchen floor. Well, I'm here to eradicate your holiday atrophy by introducing a training method that's been around for as long as strumpets have roamed the streets of Rome. It's been around for so long because it works... damn good.

I'm talking about partials. But not just any partial movement. No siree, Bob. I'm talking about heavy partials – really heavy. After all, the whole point of doing a partial movement is to load up the plates quicker than Rosie O'Donnell does at a Mexican buffet. This abrupt augmentation in loading will be shocking to you, your muscles, and your nervous system. And you'll get bigger and stronger as a result.

Motor Unit Recruitment

The sole purpose of any size and strength building workout should be to recruit as many motor units as possible. According to most experts, there are three ways to do this:

For most of us, the idea of lifting a maximal load sounds most appealing. Sure, speed training is underrated and extremely beneficial, but it's not the greatest ego booster in the world since it must be accompanied by a relatively light load. But wait, you don't care about boosting your ego, right?

Well, you should. Here's why: confidence in the weight room begets bigger muscles. I can't put it any more plainly than that. With the following information, you'll be training with loads that are at least 15-25% higher than your body is used to lifting. And that's good because the higher the load, the more motor units you'll recruit. And the more motor units you recruit, the bigger your muscles will grow.

Furthermore, everything's relative in life and training. So if your maximum squat is 300 pounds, and if you safely expose your muscles, tendons, and ligaments to 350 pounds, that original 300 pounds will begin to feel much, much lighter.

It's important to understand that full range of motion movements are important, but whether you use partials or full movements has nothing to do with motor unit recruitment. It's easiest to think about motor unit recruitment in terms of force. When you develop maximal force you can be sure you're recruiting most of your available motor unit pool. After all, the reason why you can develop high levels of force is because you've tapped into many motor units.

The amount of force you can produce is dependant on three variables:

Let's break those down:

1. The Level of Activation of Each Muscle Fiber

In order to produce maximal force we need to optimize as many of those three variables as possible. (Remember, I'm talking about force because it's positively correlated with motor unit recruitment.)

The level of activation of each muscle fiber depends on the motor neuron. The motor neuron and all of its associated muscle fibers is known as a motor unit. The reason why muscle fibers contract is because the motor neuron gives them an electrical signal to do so.

Think back to your adolescence when your father would invariably yell at you to put gas in the car. If he only yelled once, you probably wouldn't do it. But if he yelled a hundred times, you'd probably high-tail your ass to the nearest petroleum station. The same is true when motor neurons "yell" at muscle fibers: one signal doesn't cause much muscle activation, but many signals will because each subsequent signal summates. Think of summation as being akin to a snowball effect, except the snowball in question is electrical.

How do you expose your muscle fibers to the largest level of activation by the motor neuron? By attempting to move the load as quickly as possible. Of course, heavy partials involve heavy loads so it's not going to move fast. But the effort that comes from your brain to lift the load quickly will fire up your motor neurons as much as possible. So just attempt to lift each rep as fast as possible and you'll be golden.

2. The Muscle Fiber's Velocity

I don't like to speak much in terms of a muscle fiber's velocity because the research really isn't relevant to the real world. You see, the typical force/velocity relationship demonstrates that active force diminishes with an increase in velocity. But the research in question was performed on isolated muscles without a fully functioning nervous system intact.

The idea of analyzing a muscle's performance without a fully functioning nervous system is like analyzing a sports car without an engine. After all, the nervous system is what determines how many motor units are recruited.

Furthermore, during natural movements both the length and velocity of muscle fibers constantly change. Pair that with a nervous system that's constantly adjusting its neural input to the muscles. And pair that with biomechanical changes in joint position, lever arms, etc. and you've got a big clusterfuck of complex interactions that can't be explained by a simple, isolated muscle fiber. Got that?

3. The Muscle Fiber's Length

Now we're on to the good stuff, and back to partial movements. One of the primary reasons why partials are so damn effective is that they allow for advantageous joint positions. These joint positions are advantageous because they allow the muscles to position themselves so that a maximal number of cross bridges can overlap.

When a muscle is maximally stretched, it can't produce high levels of force because the myosin and actin filaments are too far apart to form cross bridges. At the opposite extreme, but with a similar effect, is maximal shortening. When a muscle is maximally shortened, the cross bridges jam into each other (interdigitate) so fewer cross bridges can form.

To establish my point, try this little experiment. Make a fist with your right hand as tight as possible with your wrist joint in an unflexed position (your knuckles are directly in line with your forearm). Have someone try to uncurl your flexed fingers from this position.

Make a mental note of how difficult it is to uncurl your fingers. Now, do the same test with your wrist joint fully flexed (make the same tight fist but maximally flex your hand toward your biceps). Have your friend uncurl your fingers from a fully flexed position.

As you now know, your ability to keep your fingers from being uncurled with your wrist flexed toward your biceps proved to be very difficult. The reason is because you interdigitated the cross bridges in your forearm muscles to the point where fewer cross bridges form. The fewer the cross bridges that form, the less force you can produce.

With partials we're going to take advantage of your strongest joint and muscle fiber positions. In essence, you'll be working in your naturally strongest range of motion. The reason why a person's maximum bench press is only 300 pounds is because that's the largest load he can lift through his weakest portion of the movement.

If this same 300 pound presser is told that he only needs to lower the barbell halfway to his chest, bam, he can press 350 pounds. By training with a significantly larger load for one month, his training load will jump substantially when he returns to full range of motion bench pressing.

In addition to heavier loads and greater motor unit recruitment, there are indeed other advantages to training with partials. Here are my four top reasons to use partials every three to four months:

A Few Key Points

Before I unveil the Powerful Partials Program it's important that I iterate the importance of full range of motion movements. I'm not saying you should stop training with a full range of motion. That would be a bad idea.

Full range of motion movements should comprise the vast majority of your training cycles. One of the reasons is because your mobility will remain high when you force your muscles to work through full ranges of motion.

Plus, you don't want to neglect any portion of a movement for more than three to four weeks, regardless if it's your weakest range of motion or not. After all, you must focus on your weaknesses too! And that's why this program also incorporates full range of motion movements along with mandatory stretching exercises.

Second, you'll soon notice that the set/rep volume of each movement is lower than I typically recommend. The reason is simple: you'll be using much heavier loads than you're used to so we must control fatigue by decreasing the volume.

Third, you'll probably have to experiment a little with the loading. The idea is to use loads that are at least 15% higher than you've been using. If you can use more, do it. But take it easy the first week because these workouts can be demanding. Also, the recommended loads are based on your full range of motion (ROM). So if you see 100% of 1RM, that means 100% of your typical full ROM performed as a partial.

Finally, since you'll be using such large loads it's important to properly warm-up. I want you to perform 2-3 sets of 3-4 reps with 80-85% of your training load, whenever you feel it's necessary. Be sure to warm-up with the partial ROM, not the full ROM.

Now, let's get to the program!

The Powerful Partials Program

DAY 1

Partial Movements

A1 Partial front squat

A2 Partial chin-up

A3 Seated barbell military press

B1 Incline dumbbell hammer curl

B2 Dip

Stretching

DAY 2

High Intensity Interval Training (HIIT) –

DAY 3

Full ROM Movements

A1 Dumbbell external rotation

A2 Dumbbell side lunges

A3 Incline dumbbell side raise

A4 Single leg back extension

A5 Barbell lunge

A6 Ab wheel

DAY 4

Off

DAY 5

Partial Movements

A1 Triceps lock-out

A2 Sumo style deadlift

A3 One-arm dumbbell row

Stretching

DAY 6

HIIT Bike Sprints –

DAY 7

Off

DAY 8

Repeat cycle for 3 more weeks.

Progression

Closing Remarks

So that's partial training, Waterbury style. The Powerful Partials Program will give you the best of all worlds. You'll drastically improve your maximal strength, thus setting you up for big muscle gains. But you won't lose any mobility since you'll also be doing full range of motion movements, along with stretching drills.