This is the 10909th most frequent Russian word.
вырабатываются
"Are produced" or "are developed."
In this sentence, 'вырабатываются' is used in the passive voice to indicate the production of substances by a system.
Гормоны вырабатываются эндокринной системой.
Hormones are produced by the endocrine system.
Here, 'вырабатываются' describes the manufacturing process in an industrial context.
На заводе вырабатываются новые продукты из сырья.
At the factory, new products are manufactured from raw materials.
In this case, 'вырабатываются' denotes the gradual development or formation of habits through repetition.