“[...] [A] person cannot be aware of two scenes, or objects, or percepts within the same modality at exactly the same moment in time (as illustrated by a Necker cube, Gestalt images such as the young-lady/old-lady ambiguous figure, and incongruent inputs into two eyes in studies of binocular rivalry). So it is with pleasure and displeasure. Conscious experience can move at great speed (estimated at 100–150 ms per conscious moment; Edelman & Tononi 2000, Gray 2004), so that it is easy to shift back and forth between alternative experiences very quickly, and to summarize both experiences in a memory-based judgment. In fact, research that specifically limits the time window to momentary experience does not find dialectic representations at single moments in time (Leu et al. 2006, Scollon et al. 2005, Yik 2006). As a result, it very unlikely that pleasure and displeasure co-occur in real time, although people can quickly shift experience contents from one moment to the next, and summarize all of the experienced contents in memory. As usual, it all comes down to precision in scientific language, namely, what one means by ‘at once’ in the sentence, ‘People can (or cannot) feel two things at once.’ The same argument can be made about emotional complexity, or feeling more than one emotion at once (Charles 2005).” (p. 378, Footnote 5).

...and, therefore probably also about “being with myself” and “being with the other” at once.

From: Barrett, L. F., Mesquita, B., Ochsner, K. N., & Gross, J. J. (2007). The experience of emotion. Annual Review of Psychology, 58, 373–403. https://doi.org/10.1146/annurev.psych.58.110405.085709

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„By aiming at making world available, the world encounters us postmoderns as a ‘point of aggression’ or as a series of points of aggression, i.e. as objects that need to be known, to be reached, conquered, controlled or used, and precisely in this way, ‘life’, that, which accounts for the experience of liveliness and encounter – that, which enables resonance-, seems to elude us, which in turn leads to fear, frustration, anger, yes even despair, which then, among other things, is reflected in impotent political aggressive behavior.” (transl. ahc)

Rosa, H. (2019). Unverfügbarkeit [Unavailability]. Wien: Residenz Verlag.

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So-called “mismatch diseases” are “defined as diseases that result from our Paleolithic bodies being poorly or inadequately adapted to certain modern behaviors and conditions” (chapter 7).
According to David Lieberman, many non-infectious mismatch diseases are mental disorders, like
Alzheimer’s disease
Chronic fatigue syndrome
Depression
Eating disorders
Fibromyalgia
Hypertension
OCD
and possibly many more (Table 3).

Lieberman’s elaborations neatly fit into the organismic self-regulation within an organism/environment space. The author gives many examples about how exactly our evolutionary-shaped bodies get in trouble with modern ways of living (“having paleolithic bodies in a post-paleolithic world”), including topics like cancer, wearing shoes vs. running barefoot, disuse of mental capacities, overweight, overexceeding hygiene (“just because we can live lives of exceptional cleanliness and comfort doesn’t mean they are good for us”), diabetes, short-sightedness, etc.

For example, about sitting in a chair (chapter 12):
“When you sit in a standard chair, your hips and knees are flexed at right angles, a position sitting can permanently shorten the hip flexors. Then, when you stand, your shortened hip flexors are tight, so they tilt the pelvis forward leading to an exaggerated lumbar curve. Your ham-string muscle along the back of the thigh then must contract to counter this curvature, tilting your pelvis backward, leading to a flat-back posture, which hunches your shoulders forward. Fortunately, stretching effectively increases muscle length and flexibility.”

Concluding that “hunter-gatherers use their backs moderately–neither as intensively as subsistence famers nor as minimally as sedentary office workers”.

Another fascinating result is the possibility that painful wisdom teeth may be related to not chewing enough during early childhood (leading to the development of smaller jaws that then cannot provide the necessary space). Yet another, that bone strength seems to be mainly determined until age 20-25 based on a “no strain, no gain” principle (“[a]fter then, there is little you can do to make your bones bigger, and soon thereafter your skeleton starts to lose bone for the rest of your life”; chapter 11)

Lieberman, D. (2013). The story of the human body: Evolution, health, and disease. New York: Pantheon Books.