A product by Grenade Review Overview - What does Grenade .50 Caliber do? .50 Caliber is a pre-workout from the folks at Grenade that claims to: Boost Energy Pump Focus Strength But does it really? Due to popular demand, we've taken a closer look at .50 Caliber and seen that it's not as clear cut as they've made out. The science behind it is actually quite … [Read more...]