People with an average of one year of experience have gained an average 7.6 inches over the past two years, according to a new report by researchers at the University of California, San Francisco.
The study, published online Monday in the journal Pediatrics, looked at the health and fitness of more than 200,000 people in the United States and Canada.
Researchers looked at what factors people were most likely to be influenced by and how they were influenced.
They also looked at how self-reported height had changed.
The researchers found that the number of people who were perceived to be taller over the previous two years had increased by 4.5 inches over that period.
That could be linked to the idea that there’s a natural increase in height associated with increased levels of self-esteem, according the authors.
The report said self-hypnotic activity, such as “self-induced” hypnosis, has also been shown to increase height.
The research suggests people who are in self-induced hypnosis or those who experience it regularly can potentially gain an average 8 inches over two years.
The study was funded by the National Institutes of Health.
Dr. Michael G. Gansler, the study’s lead author and a professor of pediatrics at UCSF, said the findings were important because people with more experience and who are older may have more confidence in self hypnosis.
“We found that a large majority of those with experience have had at least two years of self hypnotic experience,” he said.
“We also found that those with more years of experience had a higher likelihood of being perceived as taller.”
Gansler and colleagues found that self-enhancement, the process of using one’s own experience to create positive change in others, was associated with an increase in both height and body mass index, which measures body fat.
Ganslin said self hypno activity may have been part of a process of growing up in a society that is influenced by social expectations of what people should look like.
“The idea that people can use their own experience of growing to make them look more like their parents or more like a certain celebrity, it may have a very powerful effect on height,” Ganslin told ABC News.
Gains in height are seen in the U.S. and Canada as people who have more years experience of self improvement.
The results were consistent across age groups, including those who had been diagnosed with cancer, were in their 60s, and had had at or above-average weight loss.
Gays, lesbians and bisexual people also gained an additional 5.3 inches over four years.
But this was not a statistically significant change compared with people who did not have any self-improvement experience.
Gonsler said self control is a very important factor in people’s height.
“What I find interesting is that a lot of people feel that self control plays a role in their height,” he told ABC.
“They feel like they’re not getting enough exercise and they’re using a lot more sugar, so there’s this belief that they’re getting fat, so self-control seems to be a big factor in height.”
The study was also able to show that people who experienced self-doubt or self-criticism were also more likely to gain a small amount of height, the researchers said.
“People who feel that they have self-confidence tend to be more tall than people who feel less self-confident, because they are looking for that ‘me’ factor that they can use to overcome their problems,” Gainsler said.
Researchers said the researchers are still trying to understand how self control works, but the findings suggest it may be a way for people to get more height.
Gaining the ability to control your own body and the ability for your body to control itself may help you to avoid the negative psychological effects of obesity and to achieve your ideal weight, said Gansliner.
“I think we have to start thinking about what can we do to increase our body weight and decrease our body fat, because if we don’t, we’re going to end up looking like an overweight person,” he added.