How can cardiac rehabilitation programs help a 50-year-old male recover from heart failure?

Hello doctor,

I am writing on behalf of my 50 years old father who recently got a myocardial infarction. We would appreciate more information on what exactly a myocardial infarction is, its causes, and the potential risk factors that may have contributed to my father's heart attack. Additionally, I have the following questions:

1. How can we identify the warning signs of a heart attack in the future? We have heard about cardiac rehabilitation programs for patients recovering from a heart attack.

2. What does this involve, and how can it aid my father's recovery?

3. Are there specific exercises and activities he should engage in or avoid during this period?

4. What specific dietary recommendations would you suggest for someone who has had a myocardial infarction?

5. Are there certain foods he should include or limit in his daily meals?

Please suggest.

Thank you.