Is there a difference between Indica and Sativa?

The consensus is that indica provides a more overall “body buzz” that helps people relax and sleep whereas sativa gives more of a “head buzz” that can be energizing and productive. This is where indica gets the name “in da couch”, as it can be known for having a “couch-lock” effect and is a good way to remember the main difference as far as effects go.
 
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