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.
OS stands for Operating System. A computer's operating system is the foundation software that lets everything happen on the computer. Windows, OS X, and Linux are the most common operating systems for computers. iOS is Apple's operating system for mobile devices (iPhone, iPad). The i is just Apple's standard branding emblem. iPhone, iPod, iPad, iOS.