Growth hormone is naturally and safely increased when sauna sessions are combined with consistent exercise routines, and blood flow is boosted. (infraredsauna.com)
So my recommendation is to start with the basics if you have not been exercising regularly, and after 4 - 6 weeks of consistent exercise try more challenging exercises. (ab-core-and-stomach-exercises.com)
It didn't work nearly as well as a very consistent exercise program, along with dietary moderation. (nutritionfacts.org)