it continued and after four months, it actually impacted my heart and i had a lot of heart irregularities and that is what flagged up the big caution with my gp and i got referred to a pulmonary specialist, we did a lot of cardiac tests, dct, x—rays, the pulmonary stress test and in the end, even after each therapy because i lost my voice, all therapy because i lost my voice, all the tests came back normal. i was diagnosed last year with dysfunctional breathing and of course i am doing all the breathing exercises, but the thing is i am still having the long issues, post exertional malaise and i am doing all the right things. i am in a long covid rehab clinic now and it has been two years. it is covid rehab clinic now and it has been two yew-— covid rehab clinic now and it has been two veere— been two years. it is quite an experience — been two years. it is quite an experience that _ been two years. it is quite an experience that so _ been two years. it is quite an experience that so many - been two years. it is quite an i experience that so many people been two years. it is quite an - experience that so many people are also having. professor, i know it is early days with this new testing technique but what is it that this is picking up, the different test