The Rule of 72 is a simple calculation tool for investors to use, but it's not necessarily the most accurate. Here are some more precise options to try.

Unlock your fastest, strongest runs yet with this high-intensity interval method that pushes endurance and shatters plateaus.

Quinn Cochran-Zipp went to the emergency room three times with severe abdominal pain before doctors figured out she had early-stage cancer in the germ cells of her right ovary.

I'm a Fitness & Nutrition writer for CNET who enjoys reviewing the latest fitness gadgets, testing out activewear and sneakers, as well as debunking wellness myths. On my spare time I enjoy cooking ...