Swimming does burn calories at a rate of about 3 calories a mile per pound of bodyweight. If you weigh 150 lbs. and it takes you 30 minutes to swim one mile (1,760 yards or 1,609 meters), then you will be using about 900 calories in one hour.
The grape seeds are even beneficial, as they are the source of grape seed extract, which offers several of its own medicinal benefits. Grape seed extract is available in the form of liquid, capsules or tablets. For benefits to the skin, it can be taken internally or applied topically.
How to make Grape Seed Oil. Oil from grape seeds can be extracted in many ways. Commercially it is extracted with the help of mechanical press and for deriving oil in lesser amounts the mortar and pestle extraction method can be applied. Both apply cold press methods for extraction.