Hi all, I have been wondering about this for a number of years now...I am 5 ft 4 and around 61 kg / 9st 10lbs - so a healthy BMI. I exercise A LOT. I go to the gym around 5-6 times per week. I've run marathons, done triathlons and half IronMan races. However, I binge on junk food; I do it once every 2 weeks usually. Over the 2 week period I am very strict with my diet and exercise, then that second weekend will come and I will binge like mad. I mean I go to the shops, buy a trolley full of junk food (chocolate, popcorn, crisps, cookies, pizzas, icecream etc) and eat unhealthily for 2-3 days. Then I feel so much guilt and so get back to my exercise and strict healthy eating. I have always been weight conscious for as long as I can remember and always been conscious of my figure. When I was around 17 years old (I am now 26) I lost around 1.5 stone in weight and became underweight, again from over exercise and undereating. But after around 12 months, I gained the weight. I have never made myself sick so I never believed that you could have bulimia without making yourself sick...but now I have researched it a bit more, I am worried that this is what I have? Any help would be much appreciated.