Regular Stretch Therapy 2024: Uses, Benefits, Risks, and Coverage

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How Stretching Can Explode Your Muscle Growth

Not only is stretching important for flexibility, it is critical for massive, rapid muscle growth.

When you think about gaining muscle, stretching is probably not the first thing that pops into your head. But did you know that stretching plays a critical role in building muscle?

What is the fascia?

Every muscle in your body is enclosed in a bag of tough connective tissue known as fascia. Fascia is important for holding your muscles in their proper place in your body. But your fascia may also be holding back your muscle growth.

Think for a moment about your muscles. You train them and feed them properly. They want to grow and will grow but something is holding them back. They have no room to grow!

Stretching for muscle growth

Because fascia is so tough, it doesn’t allow the muscle room to expand. It is like stuffing a large pillow into a small pillowcase.

The size of the muscle won’t change regardless of how hard you train or how well you eat because the connective tissue around your muscles is constricting the muscles within.

The best example of this is the calf muscle. The lower leg is riddled with fascia because of its tremendous weight-bearing duties in the body. It is because of this fascia that many trainers have great difficulty developing their calves.

Muscle injury

  • Neck (3)
  • Shoulders (5)
  • Chest (4)
  • Arms & Hands (4)
  • Stomach (3)
  • Sides (2)
  • Upper Back (4)
  • Lower Back (8)
  • Hips (5)
  • Buttocks (4)
  • Quadriceps (4)
  • Hamstrings (8)
  • Adductors (Groin) (5)
  • Abductors (3)
  • Upper Calves (4)
  • Lower Calves & Achilles (4)

Some of the sports injury

Neck, Back & Core

Whiplash, Wryneck, Back Bruise & Strain, Back Ligament Sprain, Abdominal Muscle Strain

Arms, Wrists & Hands

Elbow Sprain, Triceps Tendon Rupture, Tennis, Golfers & Throwers Elbow, Biceps Bruise & Strain, Thumb / Finger Sprain & Tendinitis, Carpal Tunnel & Ulnar Tunnel Syndrome

Chest & Shoulders

Chest Strain, Rotator Cuff Tendinitis, Frozen Shoulder

Hips & Groin

Hip Flexor Strain, Iliopsoas Tendinitis, Groin Strain & Tendinitis, Osteitis Pubis, Piriformis Syndrome, Sciatica

Quads & Hamstrings

Quadriceps Bruise & Strain, Hamstring Strain, Iliotibial Band Syndrome


Medial Collateral Ligament Sprain (MCL), Anterior Cruciate Ligament Sprain (ACL), Osgood-Schlatter Syndrome, Patellofemerol Pain Syndrome

Calves & Achilles

Calf Strain, Achilles Tendon Strain & Tendinitis, Shin Splints (MTSS), Anterior Compartment Syndrome

Ankles & Feet

Ankle Sprain, Posterior Tibial Tendinitis, Peroneal Tendinitis, Plantar Fasciitis

The solution: Stretching

Using the pillowcase example from above, imagine you can expand the size of the pillowcase by stretching it. Suddenly, the pillow within has more room and will expand to fill that new space.

By stretching your muscles under specific conditions, you can actually stretch your fascia and give your muscles more room to grow.

The key to effective fascial stretching is the pump. The best time to stretch to expand the bags that are holding in your muscles is when your muscles are pumped up full of blood.

When your muscles are fully pumped up, they are pressing against the fascia. By stretching hard at that time, you increase that pressure on the fascia greatly, which can lead to expansion of the fascia.

One of the major reasons Arnold Schwarzenegger had such incredible chest development was that he finished his chest workouts with dumbbell flyes, an exercise that emphasizes the stretched position of the pectoral muscles.

He would pump his chest up full of blood during the workout then do flyes, holding the stretch at the bottom of the flye. This gave his chest room to grow to amazing proportions.

Stretching Human Muscles Makes Them Stronger

Research on residual force enhancement and muscle stretching and contraction observed under physiological conditions.

By Dilson E. Rassier – Department of Kinesiology and Physical Education, McGill University | First Published in the Journal of Applied Physiology 102: 5-6, 2007

Outline of the Study

This review article explores changes in muscle fiber, specifically examining a phenomenon known as residual force enhancement.

The primary focus is on a study conducted by Pinniger and Cresswell, which sought to explore the relationship between laboratory research on residual force enhancement and muscle stretching and contraction observed under physiological conditions.

The object of study for the authors is the large leg muscles of healthy subjects. Specifically, joint torque around the ankle, indicative of muscular force, was measured.

The results were compared with residual force enhancement generated via electrical stimulation during plantar flexion. Residual force enhancement was shown in physiological conditions to be a fundamental characteristic of contracting skeletal muscle.

While residual force enhancement following electrical stimulation appears to produce similar results to those obtained in isolated preparations, the relation of this effect to that produced by voluntary activation requires further study.

What the Study Was Trying to Prove

Steady-state isometric force after active stretching of a muscle has been frequently shown to be greater than the steady-state isometric force resulting from purely isometric contraction at the same length.

This property of skeletal muscle is referred to as residual force enhancement, though the precise mechanisms responsible have remained a topic of debate. Residual force enhancement is a feature observed following active stretching of both skeletal muscles and single fibers.

The study has attempted to link existing findings, such as those derived from myofibrils, single fibers, and isolated muscles with the voluntarily muscle contraction occurring in everyday situations.

The article stresses the challenges inherent in such studies, one of which is the variance of voluntary muscle activation among different individuals.

Summary of Results

Measurements of residual force enhancement were made with the large leg muscles of healthy individuals. Sub-maximal plantar flexion and dorsiflexion was maintained by allowing the study subjects to view their electromyography signals monitored from the soleus or tibialis anterior muscles.

Muscle stretching was achieved by changing the angle of the ankle within a normal range of motion. Force enhancements of 7% and 12% were observed for plantar flexion and dorsifelxion, respectively.

Residual force enhancement produced by electrical stimulation was comparable, increasing by 13%. The mechanism of residual force enhancement, the authors believe, involves an increased stiffness in titin molecules, rather than the formation of cross-bridges or unstable sarcomeres, as often proposed elsewhere.

How will the Big Book of Stretch Routines help you?

Whether you’re a rookie athlete, a fitness conscious retiree, or a health and fitness professional with years of experience, the Big Book of Stretching Routines will give you all the routines you need to improve your flexibility and stay loose, supple and injury free.

Remember, you get over 70 routines for every major muscle group in your body. Plus, another 70+ routines for over 35 different injuries. And, my Top 10 all-time best routines: In a large “Letter” sized book (8.5 x 11 inches) with a spiral-ring binding so you can lay it open at any routine you want.


Pinniger and Cresswell’s results suggest that residual force enhancement may influence muscular system performance during everyday activities. Such enhancement appears to be a fundamental characteristic of human skeletal muscles contracting in physiological situations.

Fiber type may well play a role in the observed phenomena, given that greater residual force enhancement was seen in the tibialis anterior compared with the soleus muscle.

These results open the pathway for additional studies aimed at exploiting force enhancement in functional tasks. The effects of physical training, fatigue, muscle atrophy, and muscular disease on force enhancement are cited as profitable areas for future research.

Pinniger and Cresswell’s work represents the first clinical approximation of regular muscle activity during residual force enhancement.

A few precautions

Fascial stretching is more rigorous than regular stretching but the results can be amazing. When you stretch hard enough to cause the fascia to expand, you will really feel it!

When you are stretching the fascia, you should feel a powerful pulling sensation and pressure as the muscle works against the fascia to expand it.

Be sure you do not stretch so hard that you cause the muscle to tear or cause injury to yourself. You will rapidly learn to distinguish the difference between a good stretch and a bad stretch. You should not feel any sharp pain, just a steady pull.

Hold each stretch for at least 20 to 30 seconds as you must give your fascia time to be affected by the stretch. Stretch hard like this only when you have a fully pumped muscle as you must give your fascia a reason to expand. If your muscles aren’t pumped, just stretch normally.

One set of hard stretching after each set you do for a muscle group, besides the obvious benefits of increased flexibility, can have an incredible effect on the size of your muscles and their further ability to grow.

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