Newly diagnosed as hyper on carbimazol 20mg for 3 weeks now,the diarrhoea has stopped and not so breathlessness,still get palpitations,is it ok to start exercising as I've been too exhausted until recently??I used to walk the dogs for 2 hours a day,but since October,I was too breathless and weak. Will this affect the hyperthyroidism??? Picture of little Molly and missy rescue dogs!!!