Answer:
When Miguel has a stressful day at work he is obviously under much stress and has not been able smile. So just looking at the mirror and smiling reminds him of how good it feels to smile. then makes him feel good
Explanation:
I put the explanation in the answer
Make you more able to do hard tasks in the morning, and make you feel great!
The answer to your question is, competent person
Explanation:
our chemical barriers protect almost every infection we can get in our body