yes it will be excellent for your heart tkappa and don't forget the heart is really important it's usefull for our circulation blood so with a strong heart all the energies will be circulates in better way. I hope you will keep a regular pratice Qi gong is like everything more you pratice more you improve it but better to be regular than training hard one or two times even 5 minutes of Qi gong can change your life radically in ten years