Summary Stress: adaptive response to situations that pose demands, constraints or opportunities. Homeostasis: low stress. Stressors challenge homeostasis: stress response. Return to homeostasis: recovery, return to low stress. Or inability to return to homeostasis: exhaustion, chronic stress. Stressors: wide variety.
Breathing: (“The Oxygen Advantage“) CO2 drives the intake and uptake of oxygen: You breathe primary to eliminate excess CO2 from the body. The Bohr effect: oxygen is released in the presence of CO2. Exercise lowers oxygen (hypoxia) and increases CO2
Summary: Sauna helps to induce hypertrophy (increase in size of muscle cells). Oxidative stress (through exercise) is a source of protein degradation. Heat acclimation reduces protein degradation (and stimulates hypertrophy) through: Induction of heat shock proteins. Induction of growth hormones.