Swimming in UCSD pool, I started to count laps like in running, by rounds, to make it easier. So now, I touch the lap button on my watch on the start point only. I mostly swim a mile or so, in breaststroke, almost daily. Today I made 33 rounds (50 yards or 45.7 meters each, 25-yard laps x 66). It is 1650 yards, or ~ 0.94 miles, or ~1509 kilometers.
My times stopped improving: the time for 1.5K on the watch is one of my best times - 41 minutes and 14 seconds, often I am 1-2 minutes slower.
Antioxidants - substances that may prevent or delay some types of cell damage. Examples of antioxidants include beta-carotene, lutein, lycopene, selenium, vitamins A, C and E.
Vegetables and fruits are rich sources of antioxidants. There is good evidence that eating a diet with lots of vegetables and fruits is healthy and lowers risks of certain diseases. But it isn't clear whether this is because of the antioxidants, something else in the foods, or other factors. Most clinical studies of antioxidant supplements have not found them to provide substantial health benefits.