1) He claims that computer/phone induced postural changes are responsible for the forward stoop which occurs with age - the 'dowager's hump' - yet this phenomenon has been known about for centuries and there is no evidence that it has increased in prevalence or severity
2) He claims this technique comes from a 'chiropractor'
3) The concept of 'stimulating the C5 nerve' (which isn't even a nerve, its a nerve root) is pretty meaningless
4) The resultant sensation of temporarily improved posture that one gets after performing this exercise is very brief, and there is no evidence it persists
Indeed one can create a similar effect in the arms: Cross your arms at the wrists and touch the backs of your hands together. Pull your hands apart so that there is pressure applied to the backs of the hands and maintain this pressure for about thirty seconds. Then hold your hands in front of you, and you will notice they tend to move apart. I imagine that a similar process occurs following this exercise. However you will notice that both the separation of your hands, and the sensation of your head being pulled back following the exercise in the video, is not at all permanent.
The main reason why sitting in the front of computer is bad for the posture is because shoulders are turned in and pectoral muscles are contracted long periods of time.
Stretching your pecks two times per day improves posture much faster than this exercise.
Your forward-facing deltoids are probably engaged too, as well as your scalenes, while your lower spine is getting compressed and your core gets weaker. More is going on that meets the eye.
Not only are there more muscle groups associated with these problems, but if you try to correct these problems improperly you can develop a muscle imbalance which can exacerbate all these issues. You need the right balance of muscle supporting other parts of your body for everything to function safely.
So before you tell people just to stretch their pecs, please consult a physical therapist to evaluate you and give you specific exercises tailored to your physicality. There is no 'one weird trick' to improving your body.
The second he made-up a statistic quote: 9 out of 10 computer problems are fixed by turning it off and on again (I love IT crowd), I stopped listening!
1) He claims that computer/phone induced postural changes are responsible for the forward stoop which occurs with age - the 'dowager's hump' - yet this phenomenon has been known about for centuries and there is no evidence that it has increased in prevalence or severity
2) He claims this technique comes from a 'chiropractor'
3) The concept of 'stimulating the C5 nerve' (which isn't even a nerve, its a nerve root) is pretty meaningless
4) The resultant sensation of temporarily improved posture that one gets after performing this exercise is very brief, and there is no evidence it persists
Indeed one can create a similar effect in the arms: Cross your arms at the wrists and touch the backs of your hands together. Pull your hands apart so that there is pressure applied to the backs of the hands and maintain this pressure for about thirty seconds. Then hold your hands in front of you, and you will notice they tend to move apart. I imagine that a similar process occurs following this exercise. However you will notice that both the separation of your hands, and the sensation of your head being pulled back following the exercise in the video, is not at all permanent.