Ghrp-6 Increased levels of vitality. Strength, stamina, and durability are all improved. Muscle development is enhanced. Improved metabolic function. The libido is increased. It's important for hair to grow properly. Focused attention and improved memory. . Ghrp-2 Only GnRH pulses together with GHRP-2 + TRH infusion increased testosterone significantly from day 2 (peak increase of + 312%) through day 5 and serum E2 with > 80% from day 1 through day 3 (all P = 0.05). . Mk 677-enhanced physical strength. extreme muscle gains. improved athletic performance (aerobic and anaerobic) increased energy levels. enhanced physical endurance. improved focus. faster muscle recovery. enhanced bone density.