I appreciate that perspective, Jeanette, and I've seen that sort of depression in others I know and love. I did not mean to suggest physical activity must be the first and only treatment for everyone struggling with mental health issues, only that it's vastly underappreciated and underutilized, and drugs get more than their fair share of promotion through billions of dollars in payments to doctors and billions more in marketing to the public. I’ve added a note after the 8th paragraph to make it even clearer that exercise is not the only viable approach. Thanks for the input.