This is of course a huge topic of conversation… with online communities, in social events, and of course at the gym.
I would tend to measure it less in how many times a day, than how often in relationship to when I am with my students. And the answer there would be fairly often, especially with new students. What I find though is that back when I was working with someone as a trainer, or working on the floor of a health club, I would get quite specific questions about meal planning and nutrition. These days I am more likely to get questions about appetite and mood and body image. So just as I have to set some limits on what and how I answer on a meal planning or nutritional front, I have to set some limits on what and how I answer on a mental health front. I am no more a therapist than a nutritionist.
I do share an occasional recipe, and I will talk about the philosophy and practice related to food within yoga. I also address how the mind body connection can be brought to play with our relationship with food, as it is with all aspects of our life. And like Karin I find that I can usually stay within my scope of practice and give the answer that is needed. I would guess it is probably a few times a month that I feel someone needs, or someone asks, about nutritional services. And that I refer.