My best friend made a comment on a night out to our greater circle of friends...... oh '30' has a completely addictive personality, look at her with exercise that's a completely unhealthy relationship. I never for one second thought I had an unhealthy relationship with exercise, I thought I was just keeping myself fit and based by other fitness threads on here my activity levels are normal. HIIT - 5 days per week, 5km park run Saturday (longer run on top if I can), one interval training session in the evening. I always try to rest on a Sunday. Who is right? When is a hobby an addiction?