What is cardiorespiratory endurance?

d, i believe because of it's activity level

so i really think that most of the health care industry be doing more bad than good.

during longer space exploration trips, crewmembers may develop vision impairment risks and short-term cardiac atrophy or a decrease in the size, strength, weight, and activity of the heart during space flight because they can experience microgravity. in addition, the long-term medical condition is loss of bone mineral density and radiation exposure.