Thoughts?
*currently eating a salad and about to madly practice*
"I don't quite expect you to remember me, but I sent you an email a little more than a year ago.I would like to let you know how piano has been coming along for me using your method. I began playing the piano about Christmas of 2002, using your method from the beginning. Mid-March of 2003, I entered my high school's concerto competition for fun and experience - not in the hopes of winning their $500 scholarship. I unexpectedly won first place, competing against more seasoned pianists of up to 10 yrs. It did shock the judges when I told them I had been playing for 3 months"
Practicing after a large meal also increases the blood supply and conversely, resting after every meal will reduce stamina – there is a well-known Japanese saying that claims that you will turn into a cow if you sleep after a meal. Since most people do not have enough blood to engage in strenuous activity with a full stomach, your body will rebel by making you feel terrible, but this is an expected reaction. Such activity must be conducted within safe medical limits; for example you might initially experience digestive problems or dizziness (which is probably the rationale behind the belief that you should not exercise after a large meal). Once the body manufactures the necessary extra blood, these problems will disappear. Therefore, you should stay as active as you can after a meal, in order to prevent anemia.
That shouldn't sap your blood supply you need for practicing.