I think the single most important thing you can do is to start any form you like of a cardiovascular exercise when you are not depressed and that would change your mindset, and possibly stave off depression. If depression happens and you can at least do a bit of this exercise routine, it would be so much better for you. Studies confirm that. It is critical, I feel, to harness the power of hypomania, if hypomania occurs, to starts an exercise program while inside that stage and then keep it up at lower energy level. Gonna go do now what I preach - long overdue