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What would happen if a shy introvert lived like a gregarious extrovert for one year? If she knowingly and willingly put herself in perilous social situations that she’d normally avoid at all costs? Writer Jessica Pan intends to find out. With the help of various extrovert mentors, Jessica sets up a series of personal challenges (talk to strangers, perform stand-up comedy, host a dinner party, travel alone, make friends on the road, and much, much worse) to explore whether living like an extrovert can teach her lessons that might improve the quality of her life.

There's no doubt about it: people with heart disease lack energy. The heart needs a large amount of oxygenated blood flow to continuously meet its huge energy demands. Board-certified cardiologist Stephen T. Sinatra knows that understanding energy metabolism in the heart is critical to devising effective therapies for treating heart disease.