It could be to avoid injuries.  One reason why there are several rules in
exercising is to ensure that a person will not get injured during a
workout.  Injuries can occur when one is
either handling too much weight, doing the exercise wrong, not using proper
equipment or does not have a partner or trainer assisting him.
 
        
                    
             
        
        
        
I'm pretty sure that the answers are 1 and 2.
        
             
        
        
        
The answer should be B.
Hope it helped!
        
             
        
        
        
Hi ! 
What a self improvement for a busy person who had difficulty finding time to exercise ?
<em>-  scheduling daily invitation activity</em>
 
        
             
        
        
        
Answer:
D.choosing clothing that is appropriate for the environment and type of exercise
Explanation:
the other ones are a safety concern
this is the only one that is 100% safe