As Bhastrika Pranayama involves rapid and forceful inhalations and exhalations, it influences stress on the heart and therefore, one who suffers from heart disease, should consult health care professional before attempting such pranayama. For those with heart disease, the speed ratio of Bhastrika Pranayama should be significantly slower and gentler than what's typically practiced by individuals without such health concerns. A slower pace can help avoid overexertion and stress on the heart. However, it is important to note here that people with heart conditions should never attempt Bhastrika Pranayama or any intense such breathing technique without the guidance and approval of their doctor. A healthcare professional can provide personalized advice based on the severity of the heart condition, overall health, and medical history.