Turn on your BlackBerry PlayBook and connect it to a powered-on Mac computer using the supplied USB cable. On the desktop or within Finder, double-click BlackBerry PlayBook CD. Double-click the BlackBerry Desktop Manager Installer. The installation starts. Accept the License Agreement and click Continue Installation.
Normal Blood Sugars. 1  A normal fasting (no food for eight hours) blood sugar level is between 70 and 99 mg/dL. 2  A normal blood sugar level two hours after eating is less than 140 mg/dL.
Normal Blood Sugar Levels. Carbohydrates supply the body with blood glucose. This sugar in the bloodstream works in conjunction with insulin to supply the brain with food and the bodyâs cells with energy. In a healthy adult, normal blood sugar levels range from 70 mg/dl to 130 mg/dl, and up to 180 mg/dl after eating a meal. Causes At the metabolic level, hypoglycemia results from too little glucose in the blood or too much insulin.