How soon does the body return to homeostasis after stress is removed?

• A. 2-4 weeks
• B. 6-48 hours
• C. Immediately
• D. Several months

Answer: (B)

When stress ends, the body winds down the fight-or-flight response and returns to its baseline state. For an acute stressor, this reset happens relatively quickly as the autonomic nervous system shifts back toward parasympathetic dominance and the HPA axis stops releasing high levels of cortisol. Heart rate, blood pressure, respiration, and metabolic demands drop back to normal, and inflammatory signals decrease, allowing systems to stabilize.

This restoration typically occurs within hours to a couple of days, which is why the 6- to 48-hour window is the best fit. The other timeframes are too long for immediate recovery after a single acute stressor, and saying “immediately” ignores the physiological winding-down process that takes a little time. If stress were chronic, longer-lasting changes could occur, but the question refers to the period after the stress is removed in an acute context.