Hi TwistedGrin!

Glad to have you! Low calorie diet/high intensity exercise isn't necessarily bad, unless you were eating so few calories that you weren't getting enough nutrients to fuel your body properly. I don't know how quickly you are trying to lose the weight now, but if you want it to stick, you're going to have to make changes that you can continue to do long-term. In other words, you need to make a lifestyle change, not just go on a quick diet. I would suggest you try not to focus on losing weight quickly and just focus on losing weight permanently. That means cutting calories and exercising but it doesn't mean you have to go back to low calorie/high intensity. You can go with low-er calorie/moderate intensity. Browse around here and you'll find lots of great information and advice on good ways to go about your weight loss journey. Good luck!