Regularly scheduled exercise can do all of those depending on what /how you do it and who you are.
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Answer:
j would say both 
Explanation:
because problems can get in the way of things but they can also help you grow and develop 
 
        
                    
             
        
        
        
Calories is watching fat intake with food. if you're trying to watch your calories yes it's the fat, because you are trying to eat less fat to maintain a good diet. 
sugar crash is to much sugar intake and it makes you fatigue and go to sleep or you feel drowsy and lazy. To much sugar intake is a reason for sugar crash.