second wind

Other forms: second winds

A second wind is a burst of energy after being tired or out of breath. You may be exhausted halfway through running a 10K race, but you'll probably get a second wind before the end.

The phenomenon of a second wind has been studied by scientists, but there are still different theories about why it happens. Some think it's because of endorphins, natural "feel good" chemicals released by the body, and others believe it's the result of the body balancing oxygen and the lactic acid that builds up in muscles during exertion. You can also use this term to describe what happens when you feel wide awake again after a period of drowsiness.

Definitions of second wind
  1. noun
    the return of relatively easy breathing after initial exhaustion during continuous exertion
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    type of:
    breathing, external respiration, respiration, ventilation
    the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
  2. noun
    renewed energy or strength to continue an undertaking
    “She had dinner and got a second wind to finish painting”
    “the employers, initially taken by surprise at the pace of developments, regained their second wind
    see moresee less
    type of:
    energy, get-up-and-go, push
    enterprising or ambitious drive
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