Welcome to HealthcareMagic.
It is good to hear you have a good habit like breathing exercise
.Please continue it and you will be benefited from the exercise.There will not be any side effects if done in a limited way.
Avoid strenuous exercises and lifting heavy objects.
You can also try yoga
, only if you can do them without stress
.Hope I answered your question.If you need more information feel free to mail me.