C. H<span>ow hard a person works to do an activity.
Intensity has to do with effort. If a person works hard than they are intense, if vise versa than they are not intense.</span>
        
             
        
        
        
Answer:
F
Explanation:
It is important for the body to have a<em> 24-hour recovery period</em> after an exercise<em> (low-intensity or high-intensity).</em> This period will allow the body to rest and it will also allow you to get your energy back and<u> do even better the next time you work out; thus, it should never be skipped. </u>
It prevents the possibility of getting your muscles strained due to overtraining. Aside from this, a recovery period of 24 hours will also help in repairing your tissues and give you a psychological recuperation. 
 
        
                    
             
        
        
        
Smoking or vaping is not going directly into your blood stream unlike when eating marijuana it goes directly into your blood stream becoming more harmful in higher dosage and the effects are much faster but come at u expected times
        
             
        
        
        
Answer:
Human subject research is systematic, scientific investigation that can be either interventional (a "trial") or observational (no "test and Human subject research can be either medical (clinical) research or non-medical (e.g., social science) research.
 
        
             
        
        
        
She could slow down her work out doing not doing intense exercises and do kind of easy/ medium exercises.