Helena Christensen Has Only Been Working Out for Three Years

Well, this is one way to do a Reebock ad at 41.

Helena Christensen: "I only got into working out about three years ago. It never really crossed my mind. I started by going into the most hardcore exercise there is, which is old-fashioned boxing. I needed a sport that constantly gave me new challenges, both physically and mentally. It's the perfect way for me to work out, and not just to be slim, but to feel fit and strong. I also run a bit and I just started to play tennis. But I don't go crazy when I run. After 20 minutes, I'll come home and feel like I'm going to collapse." [StyleList]