Performance stack
The performance stack is grounded in some of the most replicated research in all of supplement science. Unlike many categories where the clinical evidence is thin or preliminary, the core performance compounds — creatine, citrulline, and the foundational amino acids — have decades of research behind them across thousands of subjects.
Creatine monohydrate is the most researched supplement in history and probably the most under-appreciated. It works by replenishing phosphocreatine stores in muscle tissue, enabling faster ATP regeneration during high-intensity efforts. The strength and power benefits are well established, but the cognitive effects are less commonly discussed: creatine also increases phosphocreatine in the brain, and multiple studies have shown measurable improvements in working memory and cognitive performance — particularly under sleep deprivation. 5g/day is the effective dose; loading is optional. Quality matters: Thorne's creatine carries NSF Certified for Sport certification, meaning it's been independently tested for banned substances and label accuracy.
L-Citrulline DL-Malate is the pre-workout compound that actually works. Citrulline is converted to arginine in the kidney, which in turn drives nitric oxide production — increasing vasodilation, blood flow, and the oxygen and nutrient delivery that defines "pump." It also buffers ammonia, delaying muscular fatigue. At 6–8g pre-workout, the performance and endurance effects are consistent across studies. BulkSupplements' pure powder form delivers this without the proprietary blends, food dyes, and stimulants that crowd most commercial pre-workouts.
Recovery completes the picture: L-carnitine for fat metabolism and mitochondrial function, omega-3s for systemic inflammation management, and collagen peptides for connective tissue integrity. The performance stack isn't about peaks — it's about maintaining a training environment in which the body can consistently adapt.
Performance
Performance
Performance
Longevity


