Beat is the story of Nik Granjer, a teenager living in New Frisko. 90% of humanity has been wiped out by what is known as "The Bug," a fatal disease that activates when one's heart rate gets elevated past 140 bpm. Nik is a Pusher, someone who likes to see how high he can get his heart rate without going over 140 and getting the Knockout, a preventative injection that automatically knocks someone out when their heart rate gets too high. But soon he begins to have suspicions that the Bug isn't exactly what it seems to be...
The Good:
The pacing in this book was very good. Key reveals were spaced out enough to allow the plot to unfold in a very satisfying manner. The writing was clear and the story was engaging. The heart rate plot device was a good means of adding suspense (side note: I think Beat would adapt extremely well as a short film, especially if scored with a Hans Zimmer-like rhythmic pulse that quickens with the main character's heart beat.) Some of the suspense of the heart rate plot device is muted by the fact that we have to rely on Nik explaining what his heart rate is from time to time, but there's not really any way around that.
The so-so:
Dystopian has never really been my favorite genre. Too often, it falls into the trope of "plucky youngsters overthrowing the government," and Beat tends to hit some of these beats (pardon the pun) as well. If you like dystopian, it probably won't bother you at all. There were some interesting reveals about the Prime Administrator later on in the book that move beyond the typical "oppressive authority figure," but for much of the book, he comes across as a generic dystopian bad guy. Which again, if dystopian is your thing, you'd probably enjoy it.
What I didn't enjoy as much:
Nik's plans are often haphazardly thrown together with a very low probability of succeeding (Nik admits as much regularly), but it felt like sometimes things worked out really conveniently for him for the sake of plot. Stuff like, there are no Enforsers until right after he's doing the thing he needs to do. In general, Nik's fly-by-the-seat-of-his-pants attitude made everything feel hectic at times, even in the quieter moments. Personally, I would've preferred him to take a little more time to develop a plan with a little more purpose.
All in all, I would recommend Beat to fans of dystopian sci-fi stories.