I believe that you shouldn't use l<span>ow intensity (light weights) if you want to build muscle mass.
</span>These types of weights won't help you much define the muscles you want to have, as opposed to free weights, weight machines, and high intensity (heavy weights) which definitely will. So if your goal is to build muscle mass, avoid light weights. 
        
             
        
        
        
    Initially, I was going to say exhaustion, however with further research, I found that the first stage would be alarm. So your answer is:
<span>The first stage of the body‘s reaction to stress is known as the alarm stage
A. alarm
I hope this helped you, have a nice day
~ Karma
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Answer:
Its different for everyone.
Explanation:
It all depends on ur metabolism, and how long each jog is. 3 pounds is a decent amount to plan for it normally takes me a few weeks to lose a pound and i jog everyday. You should ask your physician, she/he should know more about you and your body, they can also help you with a plan for exercise
 
        
                    
             
        
        
        
Being around people you like and are good for you