Hormones
The endocrine system — cortisol, testosterone, insulin and their impact on health and performance.
4.5Cortisol
The main stress hormone — essential for short-term survival, but problematic when chronically elevated.
4.7Testosterone
The primary anabolic hormone — its natural level depends heavily on sleep, resistance training, body composition and fat mass.
4.6Insulin
A key anabolic hormone regulating blood glucose levels — understanding how it works is the foundation of consciously managing metabolic health, regardless of whether someone has diabetes.
4.5Growth Hormone (GH)
A peptide hormone responsible for growth in childhood and tissue regeneration throughout life — surrounded by a dense web of marketing myths about supplements supposedly 'releasing GH.'
4.6Chronic Stress
Short-term stress is a natural, adaptive body response — the problem is when it becomes chronic. A large meta-analysis of data from nearly 200,000 people found a concrete number for how much chronic job stress raises coronary heart disease risk.