user24529: During meditation in past, it was observed that if focus is maintained on nostrils, tip of nose and center of forehead(between eyebrows) then it causes cold and cough within 2-3 days of such practice.
Surprisingly, it was observed whenever it was practised.
Tried the same experiment with other fellows at that time, they also had same symptoms, if not sooner then later.
In tipitaka, anywhere mentioned about ill-effects of such combination of meditation focus points?
Are these ill effects or could be something else, not taken into consideration?
Analysis so far-
Kayanupashyana and vednanupashyana both are all about focus, observe, analyse body parts (though not always at single area but bit by bit within whole body). There might be somewhere mentioned about such ill effects, if not then either those suttas were burned off or this assumption is wrong or assumption is correct & it might be due to wrong concentration & observation, "upward air entering as cold & sensing nose part nearby forehead leading to formation of runny nose, cold, cough"

user21432: There isn't a single sutta where the Buddha told people to focus on a specific body part when meditating. Three key meditation suttas are the Four Foundations of Mindfulness (MN 10), Mindfulness of Breathing (MN 118), and Mindfulness of Body (MN 119). There's also MN 52 The Man From the City of Aṭṭhaka  that covers 11 different meditations, none of which involve focusing on a body part. Then you have (MN 121) The Shorter Discourse on Emptiness. MN 121 gives directions for the formless attainments. Nothing in it involves focusing on a body part. (MN 111) - One by One goes through the four jhanas and all the formless attainments and also doesn't focus on a body part.
In Mindfulness of Breathing, the Buddha doesn't instruct people to look at the tip of their nose, the center or their belly, or anything else. The same is true for every meditation sutta.
So no, the Tipitaka does not talk about those ill effects, because that is not how the Buddha taught meditation. That said, if you find what you're doing helpful it could fall under the umbrella of Right Effort.
Access to Insight on Right Effort

24529: <p>During meditation in past, it was observed that if focus is maintained on nostrils, tip of nose and center of forehead(between eyebrows) then it causes cold and cough within 2-3 days of such practice.</p>
<p>Surprisingly, it was observed whenever it was practised.</p>
<p>Tried the same experiment with other fellows at that time, they also had same symptoms, if not sooner then later.</p>
<p>In tipitaka, anywhere mentioned about ill-effects of such combination of meditation focus points?</p>
<p>Are these ill effects or could be something else, not taken into consideration?</p>
<p>Analysis so far-<br />
Kayanupashyana and vednanupashyana both are all about focus, observe, analyse body parts (though not always at single area but bit by bit within whole body). There might be somewhere mentioned about such ill effects, if not then either those suttas were burned off or this assumption is wrong or assumption is correct &amp; it might be due to wrong concentration &amp; observation, &quot;upward air entering as cold &amp; sensing nose part nearby forehead leading to formation of runny nose, cold, cough&quot;</p>
 21432: <p>There isn't a single sutta where the Buddha told people to focus on a specific body part when meditating. Three key meditation suttas are the <a href="https://suttacentral.net/mn10/en/sujato?layout=plain&amp;reference=none&amp;notes=asterisk&amp;highlight=false&amp;script=latin" rel="nofollow noreferrer">Four Foundations of Mindfulness (MN 10)</a>, <a href="https://suttacentral.net/mn118/en/sujato?layout=plain&amp;reference=none&amp;notes=asterisk&amp;highlight=false&amp;script=latin" rel="nofollow noreferrer">Mindfulness of Breathing (MN 118)</a>, and <a href="https://suttacentral.net/mn119/en/sujato?layout=plain&amp;reference=none&amp;notes=asterisk&amp;highlight=false&amp;script=latin" rel="nofollow noreferrer">Mindfulness of Body (MN 119)</a>. There's also <a href="https://suttacentral.net/mn52/en/sujato?layout=plain&amp;reference=none&amp;notes=asterisk&amp;highlight=false&amp;script=latin" rel="nofollow noreferrer">MN 52 The Man From the City of Aṭṭhaka</a>  that covers 11 different meditations, none of which involve focusing on a body part. Then you have <a href="https://suttacentral.net/mn121/en/sujato?layout=plain&amp;reference=none&amp;notes=asterisk&amp;highlight=false&amp;script=latin" rel="nofollow noreferrer">(MN 121) The Shorter Discourse on Emptiness</a>. MN 121 gives directions for the formless attainments. Nothing in it involves focusing on a body part. <a href="https://suttacentral.net/mn111/en/sujato?layout=plain&amp;reference=none&amp;notes=asterisk&amp;highlight=false&amp;script=latin" rel="nofollow noreferrer">(MN 111) - One by One</a> goes through the four jhanas and all the formless attainments and also doesn't focus on a body part.</p>
<p>In Mindfulness of Breathing, the Buddha doesn't instruct people to look at the tip of their nose, the center or their belly, or anything else. The same is true for every meditation sutta.</p>
<p>So no, the Tipitaka does not talk about those ill effects, because that is not how the Buddha taught meditation. That said, if you find what you're doing helpful it could fall under the umbrella of Right Effort.</p>
<p><a href="https://www.accesstoinsight.org/ptf/dhamma/sacca/sacca4/samma-vayamo/index.html" rel="nofollow noreferrer">Access to Insight on Right Effort</a></p>
