Getting a strong core won't happen with hundreds of crunches. In fact, you should stop doing crunches because they aren't good for your back. If you want a strong core, you've got to focus on core stability
Simple? Sure. Yet powerful -- and applicable to every day of your life. Mark Cuban owns the Dallas Mavericks, along with a range of companies. Stars on Shark Tank. Is a killer salesperson. Hates meetings.
(CNN) — The blue light in LED lighting that is increasingly used in our homes can damage the eye's retina while disturbing our biological and sleep rhythms, a French health authority warned in a new report.