I don't think there's been a point in the past 15 years or so that my lower back hasn't hurt. Any high-impact exercise (like running) exacerbates this. Even low-impact exercises take a toll. I stretch daily, I wear a fully supportive bra, and I watch my posture, but the boobs are a problem. I've...
If you have heart problems I would reconsider hot yoga. Maybe start in regular yoga or try to sit in a sauna to experience the heat. First time was tough for me.
Of course anything of too much will become an issue but salt is vital in our hydration and cells being able to hold water in the body is because of salt.