What is the best exercise to increase HGH naturally?

Could you please elaborate on the most effective natural exercise routines that can stimulate the production of Human Growth Hormone (HGH)? Are there specific types of workouts, such as strength training or high-intensity interval training, that have been scientifically proven to boost HGH levels? Additionally, how often should these exercises be performed, and what factors, like diet and sleep, might influence their effectiveness in enhancing HGH production?