Grunt Nutrition

SIXSTAR TESTOSTERONE BOOSTER

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THE SMARTER CHOICE

Your body makes testosterone for muscle growth, strength gains and boosts in training performance. Unlike most, Six Star® Testosterone Booster delivers a key ingredient shown in a human clinical study to amplify your body’s natural testosterone production within the normal range. It even delivers a blend of ingredients shown to improve athletic performance.

BOOST ACTIVE (FREE) TESTOSTERONE

Six Star® Testosterone Booster is formulated with a precise dose of the mineral boron, which is shown in human clinical research to increase active (free) testosterone in just 7 days.

MAINTAIN PEAK TESTOSTERONE TO CORTISOL RATIO

Six Star® Testosterone Booster is also scientifically engineered with a unique, plant-based blend shown in a 7-week human clinical study to help maintain peak testosterone to cortisol ratio after an intense training regimen. Cortisol is a hormone released due to stress that can break down muscle tissue.

ENHANCE PERFORMANCE

In the same study, test subjects also enhanced performance as determined by a marker of training capacity.