So you don't get the performance from the octane, it comes from the engine, which now requires a harder to ignite fuel. Example: My GTI requires 91. If I use 87, it senses ignition and retards the timing, and that's what makes it slower.
The Dietary Guidelines for Americans, 2010, (PDF) recommend that healthy people get 50â65% of their calories from carbohydrates. A study posted on the American Diabetes Association (ADA) Web site agrees. For a woman eating a below-average 2,000 calories a day, 50â65% would be 250â325 grams of carb a day. The Dietary Guidelines call for âa balanced diet that includes six one-ounce (28.3 g) servings of grain foods each day.â This would mean 170 grams of carbohydrate from grains alone each day.
For example: Each gram of carbohydrate provides 4 calories. A person with diabetes on a 1,600 calorie diet should get 50% of these calories from carbohydrates. This would be a total of 800 calories of carbohydrates (at 4 calories per gram) spread out over the day.