This article is brought to you by LCMC Health. Lub dub, lub dub, lub dub—These are the lyrics of a healthy heart, and this sound is music to the ears of those who work in cardiovascular healthcare.

If you put a stethoscope on a healthy beating heart, you'd typically hear "lub-dub, lub-dub," over and over again. When the heart makes a different sound, such as a whooshing or buzzing noise, it is ...

Life's random rhythms surround us -- from the hypnotic, synchronized blinking of fireflies...to the back-and-forth motion of a child's swing... to slight variations in the otherwise steady lub-dub of ...