Swimming and Hills

I was all set to swim at the Aquatic Center yesterday morning, but when I got there the lanes were set at the shorter distance and most of the pool was covered. I asked the lifeguard why and was told that they hadn't turned the heater on yet and were trying to keep the water warmer - the temperature was 77. I decided that rather than hassle with changing into my suit that I would go home to swim in my pool which had been registering a 75 degree temperature. But when I got home, it was 71. So I skipped yesterday's swim. At lunch time the pool temperature read 74, so I took the plunge and swam for 15 minutes. It sure felt colder, but I survived.
Then, tonight, Patricia and I did hills again. This time we went back to our first location and walked for 50 minutes.