Signs of a good cardiovascular workout

After someone has completed a strenuous aerobic session the following physical signs should be observed:

  • Increased breathing rate to enable the lungs to absorb more oxygen to fuel the increased muscular activity.
  • Red flushed skin: surface blood vessels dilate so that more blood flows close to the surface of the skin where heat is lost;
  • Moist skin or sweating: when the blood becomes warmer than normal, water salts and urea pass out of the blood and through and sweat glands into the surface of the skin the evaporation of sweat has a cooling effect.

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