Category B - full version without watermark 1024x576 (check terms and conditions at The embed version with watermark is free of charge. - Description: We take up the energy that needs our body with carbohydrates which are metabolized to glucose. Thanks to the blood flow, these smallest nutritious molecules reach all cells of the body. Insulin which is set free with food intake, permits the cells to absorb the sugar. Once in the cell, the sugar is converted into energy.