I remember when i first started. There was no grasp on the importance of different things. There was no differentiating. A carb was a carb. There was also a stint where i used to throw up. I would eat a bad meal, or too much of something, and simply throw it up. Thats why there was a huge period where my weight simply fluctuated 5lbs or so, over the course of years. This varied depending on the week, as one id be bulking and the next id be cutting. I recall doing the Atkins for a summer. yea i lost a little weight, but as soon as i stopped it came right back + more.
The problem is such an ignorance of the body entirely. I know a person who paid for a dietician who put her on a 700cal a day diet, one which she would have to go in to check being ketonic. Yea she lost weight, but when it was over, a sea of blubber returned.
You see this everywhere. In gyms i see unilateral, fully extended, 1 inch ROM alternating DB pressing on fitness balls occur. I see sauna suits running around. I see trainers bringing in people every day, for Months and view NO change in their physique.
No one walks into a diet/the gym and has everything down pat. A majority simply attempt doing, and when it doesnt work, quit. Of those that dont quit, some keep at it- A display of tenacity, yes, but when no progress is occurring, something's wrong. A small percent take a little time and research things. An even smaller percentage find good information. There's so much BS flying around.
Kinda strayed off topic there, but the point is quite simple: people do without knowing.