How can i workout to gain chest muscles (pecs)?

I am already skinny to the point to where it was easy to get a six pack but i have never found the right workout to really effectively gain pecs. All i have at my house is a pull-up bar but i have a pass to the local gym. I would rather find a workout that i can do at my house but any workout to gain chest muscles... show more I am already skinny to the point to where it was easy to get a six pack but i have never found the right workout to really effectively gain pecs. All i have at my house is a pull-up bar but i have a pass to the local gym. I would rather find a workout that i can do at my house but any workout to gain chest muscles would be helpful.
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