Physiological reserve is your body's ability to tolerate and recover from stress, illness, and injury. The concept becomes increasingly important with age. Although many people focus on preventive care, immunizations, avoiding colds and flu, or preventing pneumonia, it is often low physiological reserve that places them at risk for poor outcomes, including death. Treating an illness with antibiotics, for example, addresses only pary of the problem. Even if treatment is successful, the body must…