Hello welcome to HCM. I have gone through your history. You have been adequately treated for your pneumonia and I suppose you don t have any symptoms of pneumonia like cough, fast breathing, fever, breathlessness. Since you have received intravenous plus 5 days of oral antibiotics, now you can resume about your exercise regime. As you say you had a non damaging heart attack, means that your heart pumping function is well preserved. So you must not have any issues with exercise. With every lung infection the lung capacity decreases by some percentage proportional to he severity of the infection. Hence along with your routine exercises you must also undergo breathing exercises with incentive spirometry, inhaling deeply through one nose holding your breath and exhaling fully from the other nose, meditation and yoga. This will help you to regain some of the lost lung capacity. You should also get vaccinated with influenza and pneumonia vaccines that include common strains which cause pneumonia Remember they don t protect you against all pneumonias but offer protection against common pneumonias. Regarding Naproxen too much of it may cause damage to your kidneys so I advice you decrease its usage and use it only when required rather than a daily basis. Wishing you good health. Regards