Field notes
Writing about mobility that answers the question the category avoids: how would you know if any of this were working?
Mobility is active range, flexibility is passive, and range of motion is the number. Stretching moves your tolerance first, so measure it or you cannot know.
02 Desk & postureDesk stretches work as breaks from a held position, not as posture corrections. Sitting is a dose problem, and how often you leave the chair is what matters.
03 Hips & legsHip mobility is limited by bone as often as by tissue, hamstrings need only 30 seconds, and the ankle quietly decides your squat. Test which one stops you.
04 Shoulders & upper backShoulder mobility is a chain: the joint, the shoulder blade and the upper back. The upper back is usually the missing link, and the lower back hides it.
05 Lower backLower back stretches help modestly, and no more than other movement does. Most back pain has no identifiable cause, and red flags matter more than any routine.
06 GoalsHow to touch your toes: the whole posterior chain, not just hamstrings. The squat is usually the ankle, the splits are bone-limited, and no date is honest.
07 Mobility for trainingMobility for runners and lifters, honestly: stretching has not prevented injury in trials, strength training has, and stretching does little for soreness.
08 ComparisonsThe best stretching apps: Pliability and StretchIt for taught video, Bend for a cheap habit, GOWOD for a free assessment. Prices checked July 2026.
The instruments are free and need no account.
The self-tests Limber runs are also on the web, on the same scale the app scores them with. Take a reading in a minute, in the browser, with nothing installed and nothing sent anywhere.
Open the instrumentsNone of it is medical advice, and none of it treats anything. Where pain is involved, the honest answer is usually that the evidence is thinner than the internet suggests, and that a clinician who can examine you is worth more than an article. Both of those get said here rather than dodged.