Review C4 Extreme Pre-workout
Cellucors' C4 is the "standard" for preworkout supplements. Enough stimulation for an advanced trainer and a tolerable level for a beginner with 150mg caffeine per serving (2 espressos....) and small amount of advantra-z (synephrine) that has a proven metabolic enhancing and fat burning effects. I always have a tub in stock and cycle it on alternating days. Its great!
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