Not only do these standing desks improve focus but they can also have positive health benefits as well, which really brings the best of both worlds when it comes to young minds.
This sounds exactly like a media release (Public Relations release) from the importer or marketer of the standing desk. Often such "blurb" is simply reproduced in newspapers as if it is "news".
... really brings the best of both worlds when it comes to young minds.
This is an inelegant mix of two idioms, but it is grammatically correct - just. The more common expressions are "represents the best of both worlds", or "have the best of both worlds", or simply "is the best of both worlds" - it is not something that anyone normally "brings" anywhere, or "to" anyone.
Also, there is no evidence provided that "young minds" are going to benefit from this "best of both worlds" claim more than - say - older minds would. And yes, the writer has used synecdoche, presumably because it sounds more romantic or caring than simply saying "young people".