As for children, many doctors recommend at night just before bed. This way it becomes part of your nighttime routine, and you are not under pressure to do it in the morning when you may be rushing to get to work, or have your mind on other things.
For adults, the best time to inject is as soon as you awake in the morning. Your body is “cleanest”. Your sugars, carbohydrates, and cortisol are at the lowest levels and will allow for the maximum release of IGF-1.
Ideally, chose a calm, well-lit area to administer your HGH injection, with a flat clean surface area to place all of your growth hormone injection supplies. Be sure no one, or nothing in the area will disturb you, so that you can completely concentrate on properly administering your HGH injection.