What are some healthy ways to gain weight ?

Anonymous
Lately, my weight has been dropping and my clothes don't fit me as good as they used to. I don't want to look sick or like a bag of bones. I eat considerably but since I'm stressed lately (mid terms and my part time job) I was wondering what are healthy ways to gain some weight. Emphasis on the word healthy. I'm 5"1 and weight 99lb, I'm aiming for 110lb.

Any tricks ?
What are some healthy ways to gain weight ?
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