The majority of HGH is released during deep sleep. Aim for 7–9 hours per night; levels drop significantly if you get less than 6 hours.

Short bursts of intense activity can trigger a natural spike in HGH.

Human growth hormone (HGH): Does it slow aging? - Mayo Clinic

It is primarily prescribed for growth hormone deficiency in children or adults, and sometimes for muscle-wasting conditions related to HIV/AIDS.

In the United States and Canada, HGH requires a valid prescription from a licensed physician following clinical evaluation and blood testing.

Excess body fat, particularly around the belly, is linked to lower HGH production.

If you see growth hormone products at retailers like GNC , these are typically "secretagogues"—blends of amino acids and herbs intended to stimulate your pituitary gland to release its own growth hormone. SeroVital Anti-Aging Therapy ($99.99) Novex Biotech GF-9 ($99.99) Nugenix GH-Boost

Before buying expensive supplements, consider these lifestyle changes that have a proven impact on HGH levels: