Rafik D Grygoryan 
Energy Basis of Reversible Adaptation [PDF ebook] 

This book proposed a comprehensive energy theory of reversible adaptation (ETRA) explaining general rules and mechanisms of organism adaptation to shifts in both external and internal environments. The theory is based on cellular mechanisms of reactive adaptation (CMRA) controlling long-term energy balance. CMRA and an organism-scale distributed functional system called energy mega-system (EMS) provide human reversible adaptation to unstable external/internal environmental conditions.