I have a set of speedskates from Rollerblade. I'm off work for 3 weeks and have been skating 5+ hours a day for exercise and enjoyment. This isn't your traditional cardio but at what point is it too much? Should I be worried about losing weight too fast? I'm currently trying to lose weight but is the possible rapid weight loss bad? I'm 25 I weight 205lbs. My target weight is 185lbs and I start lifting next week as I have been dieting the past 60 days and trying to start with a good foundation. Let me know what you think?