ALPHA
- Shock - blood loss, poor blood flow, low oxygen supply - catecholamines
- Hypercatabolism - increased basal metabolic rate, anaerobic metabolism, excessive breakdown of fat and protein - $\uparrow$ cortisol, glucagon $\downarrow$ GH, insulin
- Anabolic phase - macromolecule synthesis, onset of recovery, improved appetite - risk of refeeding syndrome