Morissette, 35, tells Runner's World that "running has made being depressed impossible. If I'm going through something emotional and just go outside for a run, you can rest assured I'll come back with clarity."
The Grammy-winning singer, who has run two marathons, tries to live a healthy lifestyle, including eating lots of kale. But she still occasionally indulges "in red wine, and it's fun to have medical marijuana once in a while," she says.
HuffPost Entertainment is your one-stop shop for celebrity news, hilarious late-night bits, industry and awards coverage and more — sent right to your inbox six days a week. Learn more