<span>Good Morning!
Both contain truths. With the muscles accustomed to that amount of work, the effort is being reduced, since there is an increase of force. The work also assists in strengthening the heart, which is now more effective in pumping blood.
Hugs!</span>
That something is wrong with them and they are not doing the best since their oxygen level is low
paralanguage: <span>the nonlexical component of communication by speech, for example
intonation, pitch and speed of speaking, hesitation noises, gesture, and
facial expression.</span>
Hoped that help;)
- Whitewolf