Skeletal growth after the early 20s does not occur. Height increase comes from lengthening of the long bones at the growth plates, and when proliferation completely stops, longitudinal growth also stops and the final adult height is reached, a process known as senescence of the growth plate . Growth plates are areas of specialized cartilage near the ends of long bones, and increases in height are primarily due to their lengthening; for most people height will not increase after age 18 to 20 due to growth plate closure. No exercise, fascia protocol, or postural intervention reopens a fused growth plate.

However, measured standing height genuinely fluctuates, and the magnitude is not trivial. In a controlled stadiometry study, mean circadian variation in stature was 19.3 mm, about 1.1% of stature, with 54% of the diurnal loss occurring in the first hour after rising and roughly 70% regained during the first half of the night . The majority of this stature loss is attributed to changes in intervertebral disc height, with estimates of reductions of up to 1.5 mm in each lumbar disc alone. So roughly 2 cm of standing height is a real, physiologically modulated quantity in adults, driven by disc hydration and spinal loading, not by bone growth.

The specific mechanism implied by the hashtags is weakly supported. On fascia work specifically: despite its popularity, there is little scientific evidence of the effectiveness of fascial stretch therapy . On stretching changing tissue length: static stretching alone does not appear to increase fascicle length , and a separate meta-analysis found that while long-term stretching increases joint range of motion through altered stretch perception and decreased resistance to stretch, evidence that stretching induces changes in muscle morphology is limited and inconclusive . Range of motion gains appear driven substantially by stretch tolerance rather than structural tissue lengthening.

The creator has a documented personal height claim. His own site states that his education paired with his physical transformation, including a nearly one inch gain in height, helps him assist clients with goals including posture, balance, coordination, and athletic performance . This is a self-reported, unmeasured-by-third-party anecdote on a page selling coaching services. It is n=1 and not evidence.