Why Do They Do Studies Like This?

A recently published study claims to have shown that a proprietary mixture of velvet bean and Chlorophytum borivilianum improves sleep quality. The journal, Integrative Medicine Insights, is online, peer-reviewed, PubMed indexed, open-access, and it charges authors $1848.00 to publish their article. It advertises editorial decisions in 3 weeks and publication in 2 weeks after acceptance. I can see