A few seconds of stretching are not enough to lengthen fascia and tendons; you need positions held for two to four minutes which, combined with deep breathing, physically and permanently modify the structure of the connective tissue.
- Muscles are elastic and stretch quickly, but fascia and tendons are viscoelastic: they require slow, prolonged loads (plasticity) to change.
- The stretch reflex (myotatic reflex) is a defense mechanism of the nervous system that stiffens the muscle if stretched too quickly. It must be inhibited through deep exhalations.
- To stretch the psoas and hip flexors, the “Pigeon” pose on the floor must be held for 3 minutes per side.
- Stretching the posterior chain (back, glutes, and hamstrings) requires a passive forward fold left to act for 2-3 minutes.
- Opening the rib cage and releasing tension in the shoulders is achieved through floor twists, with a hold time of 2 minutes per side.
Difference Between Muscle Elasticity and Connective Tissue Plasticity
The human body is made up of overlapping layers of tissues with radically different mechanical properties. Muscle tissue is highly vascularized and possesses a distinct “elasticity”: when subjected to brief traction, it temporarily elongates and then quickly returns to its original shape as soon as the tension stops.
Conversely, the network that envelops muscles and joints (the fascia) and the tendon endings are mainly composed of collagen fibers. This connective tissue possesses viscoelastic and “plastic” properties. As highlighted by scientific research, such as in studies on the viscoelastic properties of the plantar fascia and connective structures subjected to traction, collagen does not respond to brief stimuli. To achieve a permanent deformation (plastic elongation) and separate the adhesions that limit movement, a slow, constant, and prolonged mechanical traction is necessary, on the order of several minutes.
Inhibiting the Muscle’s Protective Reflex
The biggest obstacle to a deep fascial release is not structural rigidity, but the central nervous system. When you stretch, the receptors inside the muscle fibers (muscle spindles) detect the change in length. If this happens too quickly, they trigger the myotatic reflex: a safety mechanism that orders the muscle to contract to prevent tearing.
As long as the muscle is contracted in self-defense, the tension will never reach the deep connective tissues. To deactivate this “alarm,” it is vital to use diaphragmatic breathing. Once you reach the position of tension (which must be mild and never painful), focus on long, slow exhalations. After about 60-90 seconds of deep breathing, the nervous system understands that there is no danger, inhibits the reflex, and allows the muscle to completely relax. Only at that moment does the true work of plastic elongation on the fascia begin.
Psoas and Hip Flexors: The Pigeon Pose (3 Minutes)
The hip flexors, and the psoas in particular, tend to shorten drastically due to the countless hours spent sitting.
To release them, the “Pigeon pose” (Kapotasana) is the primary tool. Starting from a tabletop position on the floor, bring your right knee forward, behind your right wrist, positioning your foot towards the left side. Fully extend your left leg backward. If you can, rest your forearms on the floor or place a cushion under your chest to offload the weight. Find the point where you feel a dull tension in your right glute and left groin, stop, and breathe. The required holding time per side is exactly 3 minutes. Do not force the push; let gravity make you sink millimeter by millimeter.
Posterior Chain: Passive Forward Fold (2-3 Minutes)
The entire myofascial web running along the back of the body (from the sole of the foot to the base of the skull) works as a single, continuous transmission belt.
To stretch it plastically, sit on the floor with your legs straight out in front of you. Relax your ankles. Instead of trying to grab your toes with a sudden jerk (a common mistake that activates the myotatic reflex), flex your torso forward completely passively, rounding your back and letting your head drop toward your knees. Your arms are abandoned at your sides. Maintain this position in total surrender for 2 to 3 minutes. With each exhalation, you will notice your head inexorably drawing closer to your knees without the slightest active effort.
Shoulders and Chest: Floor Twist Opening (2 Minutes Per Side)
The upper torso requires targeted intervention to release the pectoral fascia and the anterior deltoid, which are frequently retracted and fibrotic.
Lie face down on the floor. Extend your right arm to the side, keeping it in line with your shoulder with the palm facing down. Use your left hand (resting on the floor near your chest) to push and rotate your body to the right, lifting your left hip and left leg to place it behind your back. Your head should remain relaxed on the floor. You will feel a strong stretch in your right pectoral area and shoulder joint. The correct holding time for this twist is 2 minutes per arm. Breathe into the joint and do not give in to the urge to exit the position before the time is up.