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Description
The standard preparation is 2 mL of bacteriostatic water added to a 70 mg vial, producing a solution with GHK-Cu at 25 mg/mL, BPC-157 at 5 mg/mL, and TB-500 at 5 mg/mL

2004;86(6):W67

Studies show that HIIT can lead to temporary spikes in GH, which may improve fat metabolism and support lean muscle development when paired with resistance training

This doesn't mean evening dosing is universally superior
