Answer:
To be physically fit you should have: 1) aerobic (cardiovascular) endurance, which is the ability of your heart and lungs to supply oxygen during sustained physical activity; 2) muscular endurance and strength to perform activity without fatigue and with the force needed to do the job;
exacerbated means to make a problem, a feeling, or a situation worse.
used is a sentence it would be used like this
The new law only exacerbates the problem
i hope this helps.
Damaged DNA in cancer cells cause the cells to reproduce too quickly
example:
using a copping skill
study before the test
find something to calm you down