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.
Some studies suggest that compounds in grape seed extract may reduce edema (swelling) and help with symptoms of chronic venous insufficiency, but the evidence isnât strong. Grape seed extract may have some heart benefits, including lowering systolic blood pressure and heart rate. The lower heart rate may cause the decrease in systolic blood pressure. The extract had no effect on lipid levels such as cholesterol or C-reactive protein, an indication of inflammation in your arteries.
While the scientists saw no difference in 24 hour energy intake between the grape-seed extract and placebo groups overall, in the 23 subjects with a higher than average energy requirement (7.5 megajoules a day), energy intake was reduced by 4 per cent after grape-seed extract compared to placebo treatment.n vitro experiments have previously shown that polyphenols, the antioxidants present in high quantities in grape seed extract, stimulate the breakdown of fat. Grape seed extract has also been shown to reduce food intake in rats.