I'm a bit concerned because I've never had any medical issues before, but for the last month or so, I've been getting out of breath really easily, even just walking a short distance or talking a lot. I used to be really active, going to the gym and doing cardio and weight training regularly until the end of last year. I'm curious if there's something going on with my health and what kind of remedies I should consider. Any thoughts on what might be causing this sudden breathlessness?