does anyone know what causes that pressure-in-your-chest feeling while on clen? i figure it must be a typical side-effect cause both me and the wife are experiencing the same thing while on it. does that mean you should stop upping your dose or if it's tolerable keep going? it's not pain, just an odd pressure feeling. it's kind of like heartburn without the burning. if anyone knows what causes that, please ease my curiosity? thanks guys.