Heart disease is on the rise in younger adults. A cardiologist says prevention needs to start sooner.

Tech Insider : Business
A woman pictured in an out-of-focus side view checking her smartwatch on a run
Incorporating different heart rate zones into a workout can boost fitness and prevent plateaus.

Jacob Wackerhausen/Getty Images

The surprising effects loneliness has on your brain and body

Tech Insider

Loneliness can create a chain reaction of serious health issues if not adequately addressed. Business Insider's Mia De Graaf breaks down what happens inside your body when you're lonely.

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