Introduction
Pt. I. Basics of organismal design
Maintaining the balance of heat, water, nutrients, and energy
Symmorphosis : principle and limitations of economic design
Pt. II. Adding environment
Metabolic ceilings : the ecology of physiological restraint
Phenotypic plasticity : matching phenotypes to environmental demands
Pt. III. Adding behaviour
Optimal behaviour : currencies and constraints
Optimal foraging : the dynamic choice between diets, feeding patches, and gut sizes
Pt. IV. Towards a fully integrated view
Beyond the physical balance : disease and predation
Population consequences : conservation and management of flexible phenotypes
Evolution in five dimensions : phenotypes first!