Same 1800 yard set swimming today. 3 weeks to go from difficulty swimming 200 yards at a go to doing 1000, 500 and 300 yard set without much trouble.

I'm going to be in shape if I keep this up. so I think I will - at least 3x weekly do 1800 yards. I've noticed improvements in the little less than 4 weeks I've been doing it - the aforementioned endurance, plus my pulse rate at the end of a set was 146 the first time out, now it is 124. So 146 after 200 yards versus 124 after 1000 yards - my heart is working less after more strenuous exercise. Cardio and pulmonary systems are functioning much better. Measured breathing during freestyle has to be good in a yoga/spiritual sense as well - exhale through nose, inhale through mouth at a pretty constant pace.

This almost has to have an effect on my metabolic rate, which could lead to weight loss. If that happens other infirmities will be alleviated (left psoaz muscle causes back aches, restriction of motion of left leg).