Posting here for traffic.I’m 51 and quite slim and petite; have always swum in pools and open water, not competed and don’t want to race. I have no desire to swim in pools these days and do drills, I’ve swum outdoors through the winter and loved it and now I want to aim for 1 mile, 2 miles etc. Anyone done this at my age? Any tips on how to increase distance without training in a pool? Is my body type against me? All the long distance swimmers I know or read about seem naturally to carry more weight which seems to equate to insulation and time in the water.