My wife is pretty good about it, usually, I try. My main goal now is to cut down on alcohol, which effectively means drink none at all for days. I relent on weekends. I don't do well having "one glass". It's either zero or too much.
I do OK on sugar and processed foods. My BP and heart rate are surprisingly low. The nurse asked me why the latter was so low before my eye surgery, she said it was between 47 and 49, I was on a monitor.
The drugs they give you are pretty good, no after effects, I don't have much memory at all during the procedure, they did the laser thing first before the drugs.
