ASK THE DOCTORS
Hello, dear readers, and welcome to the monthly letters column. Are we too far into 2023 to wish you all a happy New Year? We're deep into flu season, as well as lose-those-holiday-pounds season. Both are topics in your letters, and of future columns. And now, your questions.
— Our ongoing columns about post-COVID-19 exercise continue to generate mail. 'When is it OK to resume my wal…