Following a genre on Instagram can present a wealth of ideas. The algorithm drives users toward content similar to what they've seen or liked. However, this can lead and encourage users toward extremities.
For instance, if you are following fitness gurus or sponsored athletes. Then add some photo-editing to alter the body-image you want to project. At the same time, the algorithm continues to feed you with what you like or want until your feed becomes a mosaic of increasingly extreme exercisers.
The more you view extremities, the more the algorithm drives you toward it. And the images train the eye and rewires your brain until it is just another thing.