At least it was a novel concept. I was interested in seeing how they would find the cure, which was hiding in plain sight.
I liked the idea behind the film. Explanation of sleep deprivation.. spoiler alert..
due to EMP from the solar flares.
A study, among others, on EMP and sleep:
Barsam et al (2012) Effect of extremely low frequency electromagnetic field exposure on sleep quality in high voltage substations
Good enough for a movie, I would think.
Much better than other movies, I usually skim over because its so 'the same'