I don't know if I'd say it's the best therapy towards stress, but it could certainly be one of the many options that works for some. I know some people would love to workout to curb their stress. But some others I know find working out a stressful thing, so in a way some don't find it as a therapeutic option. I think it depends on each person. I know for me, I dreaded working out, but that's because I'm overweight and working out is not very comfortable for me. But, it's more about doing what you can.