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Endogenous (naturally produced) HGH surges during sleep and intense physical activity, but levels begin to decline significantly with age
The importance of quality products Long-term safety depends partly on the quality of products you're using
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But these levels naturally decline with age and drop even further in response to chronic stress, inadequate sleep, poor dietary protein intake, heavy alcohol use, and prolonged exposure to environmental pollutants
Se is an essential trace element for human body ( 2 Se is closely related to the metabolism of thyroid hormones 2.1 Se and selenoprotein Se is absorbed by the body and involved in the synthesis of selenoproteins
