What is the best thing to eat before exercising for energy and endurance? You need quality carbs, lean protein, heart-healthy fats, and fluids. Your muscles rely on carbohydrate foods like breads, cereals, pasta, rice, fruits, and vegetables for quick energy.
For other uses, see IOS (disambiguation). iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that presently powers many of the company's mobile devices, including the iPhone, iPad, and iPod Touch.
That's a question we hear a lot at Macworld. Most of the time the iPhone and iOS are wonderfully easy to use, but the iPhone does show a lot of symbols, icons and alerts. Getting to know what these symbols mean will help you to understand Apple's iOS operating system. Here's our guide to various iOS symbols so you know what they mean. Updated, 3rd April 2014.