Objective is to complete as many curl-ups as possible up to a maximum of 75 at a specified pace. ... When performing the curl up students need to get their backs up off the mat far enough so that their fingertips cross the measuring strip.
Oxygen enters the lungs, then passes through the alveoli and into the blood.
“Respiratory” could be a result of inhalation
Even having a cold or sore throat makes you more susceptible to dehydration because you're less likely to feel like eating or drinking when you're sick. So yes you can get dehydrated in the cold.
