Dear Doc: I can’t speak for everyone, but I know where I live, we’ve still got a month or so of extreme cold weather left. Following the advice from your last column, I’m pushing through with my outdoor workouts. While I am staying warm, I’ve noticed that I get tired quicker than I would when it’s warm outside. I’ve also heard that your heart must ...

Dear Doc: Although my gym has opened back up, I’m still a little hesitant to return because of the recent spikes in COVID cases in my area. I’ve been getting creative with my home workouts, and I’d really like to be outside more, but it’s so cold! I want to bundle up, but I don’t want to overdo it and get overheated. Do you have any recommendations ...