Answer:
It depends. If cheering up impedes our personal progress, than we should seek to improve first. But cheering up can be helpful at times when depression impedes progress/normal functioning. It is generally healthier to be cheerful than to be gloomy and depressed. 
Explanation:
 
        
             
        
        
        
It depends if you feel it in the muscles as the pain being from your muscles getting sore or if you feel it in your joints or another part that you should not feel pain you you should stop then and tell the doctor