Tapering Day 1

I'm not sure if I have this tapering thing right. At the end of the day I felt tired and sore. That can't be right ... can it? The day started with a doctor's visit to go over the results of my stress test last week. They did an ECG and took my blood pressure and then I had my consult with the doctor. We talked about why I was there, how I was off my training for 10 days and when I started again I got a bit of chest tightness and how my family doctor wanted me to go through these tests just to be on the safe side. He was a little confusing in how he spoke to me. On the one hand he said I had heart wall thickening and stiffness but like it was a bad thing and then explained that the heart is a muscle and like any other muscle if it's exercised it will get bigger which wasn't a bad thing. Then he said that I had a slow heart, again like it was a bad thing and then explained that athlete's in top shape have low resting heart rates .... a good thing. Finally he said I had athletic heart disease. What? Disease? Well not really a disease but more of a condition or syndrome. It's typical for athlete's who train a high number of hours per week to develop an "athletic heart". His concern was that this was a physiological condition and not pathological. In other words, this condition has developed because of my training and not because of some true disease. He cleared me to race in Miami but suggested I get a heart ultrasound when I get back again, just to make sure. I'm not worried but I booked an appointment anyway. In the afternoon I went for a short easy run, 5 km at a 5:30 pace and in the evening I hit the pool for a swim. I tried to maintain a quick pace but kept the distance down to 1500 m as part of my tapering but at the end of the day I felt tired and my muscles were sore. Tapering isn't supposed to feel like this is it? Maybe I should take it easier tomorrow and Wednesday. I don't know, I'll have to talk with Chris tomorrow to get his input.