The use of “Cryotherapy” (extreme cold exposure) is designed to manipulate the body’s vasoconstriction and vasodilation cycle to manage systemic inflammation.46 In a cryotherapy chamber, temperatures drop below -110°C, causing blood to rush away from the extremities to protect the core. Once the athlete exits and puts on warm Hoodie shirts, “reperfusion” occurs—a massive surge of oxygenated, nutrient-rich blood returns to the muscles. This process is believed to flush out metabolic waste and reduce the levels of C-reactive protein (CRP) and other inflammatory cytokines. While controversial in its ability to build long-term muscle, it is highly effective as a “neural reset,” dampening the central nervous system’s perception of pain and allowing athletes to tolerate high-frequency training blocks during a competitive season

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The “Pateleur Reflex” and the “Stretch-Shortening Cycle” (SSC) are the secrets behind “reactive strength” in sports like basketball and volleyball. The SSC involves a rapid eccentric contraction (muscle lengthening) followed immediately by a concentric contraction (muscle shortening). During the lengthening phase, the muscle’s muscle spindles sense the stretch and send a lightning-fast signal to the spinal cord, which then triggers a more powerful contraction in response. This Hoodie shirts allows an athlete to jump much higher if they perform a quick “dip” first, compared to starting from a static squat. This neurological “snap-back” essentially adds free explosive power to the athlete’s voluntary muscular effort.

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The “Ventilatory Threshold” (VT1 and VT2) provides a more practical metric for endurance training than heart rate alone. VT1 is the point where the breathing rate begins to increase as the body starts to produce more $CO_2$ than can be cleared by normal respiration; it marks the transition from purely aerobic to “mixed” metabolism. VT2, often called the “anaerobic threshold,” is where the athlete can no longer speak in full sentences because they are breathing so heavily to buffer the accumulating lactic acid. By training specifically at these Hoodie shirts, athletes can “teach” their blood to more efficiently buffer acidity, allowing them to maintain a higher pace for longer periods before the “burning” sensation in the muscles becomes unbearable.

• This All Over Print design is made with high-quality, 100% spun polyester that delivers the look and feel of organic cotton without ever cracking, peeling or flaking. It stays wrinkle free and soft to the hand forever, able to withstand summer festivals, late nights and world domination with style and grace. 

  We print our product using dye-sublimation, a technology that allows for us to produce these insanely vibrant all over designs. Due to this process, the product may contain smudges or irregularities along the seams or under the armpit of the sleeves or on the hoodie pocket. We cannot accept returns for this reason. Each item is a unique, 1 of-a-kind product, printed exclusively for the customer who ordered it.