OK... this.I'm guilty of chronic cardio but I am a runner and really find joy running long distances.
Probably needs to stop. Chronic cardio is a great way to get your body into a catabolic state. It's entirely possible to be a "normal weight" while having a high percentage of body fat, which will be demonstrated usually by waist measurement.
Lots of runners and chronic cardio addicts will have trouble with muscle tone, or even have trouble losing weight despite hundreds of calories burned on their run.
Add some resistance training, weights. Do your cardio, but do it through interval training and short bursts.