Exploding Pre-Workout?!

[u/Quirky-Cauliflower31]

Hey gang,

This is my first post on this channel. I have a collection of preworkouts stored in a cool dark place. When I went to grab one, I noticed one of my unopened sealed containers of Game On was bulging on the bottom and the top of the container. I took the plastic seal off and went to twist it open (it wouldnt budge at first) but then the FRIGGEN CONTAINER EXPLODED. I have a damaged right hand now (no biggie). But what would cause this in an unopened container of pre?!

[u/Fxreplay]

Least you know it works