Exercise

Image by Yann!s via Flickr

I have just read an extract of an article which suggests that exercise can be as addictive as Heroin. I have to admit, for myself, that when for some reason I can't do a particular form of exercise I usually do, I miss it. For instance, I always feel really good after swimming and if something happens so that I can't go to the pool, I do feel a bit edgy. But as adictive as Heroin . . .?