I know for sure that exercise is keeping me WAY more postive and I sleep better than i have since early childhood. I think that when I will have to take breaks, it will stress me out. I just love the relaxation I feel after a good work out!
What would be really nice would be an antidepressant that I could just take a few days a month for PMS! Instead i just try to keep myself out of trouble and do more aerobics for those few days. And riding just calms my mind, it's the best. The visual stuff and the sweating are so good for me.