Melissa Breyer was Treehugger’s senior editorial director before moving to Martha Stewart. Her writing and photography have been featured in The New York Times, The Guardian, National Geographic, ...

The ventricles share a common septum and, therefore, the filling of one influences the compliance of the other. This phenomenon is known as direct diastolic ventricular interaction. The interaction is ...

Just like you prep your home for winter by insulating your windows and winterizing your garage, you should also make sure your car is ready for the change in weather. Equipping your car with winter ...

Lower back spasms are involuntary contractions or tensing of the muscles in the lower back, and they may affect movement. Doctors may recommend medications, lifestyle changes, and complementary ...

Vaginismus makes vaginal penetration painful or impossible due to pelvic floor muscles involuntarily contracting. Primary vaginismus is lifelong, while secondary vaginismus develops after previously ...