Had a sudden cardiac arrest last August age 64. No symptoms, never smoked, low BMI, healthy weight, don't drink & healthy lifestyle. Very fit, regular exercise, played sport incl intensive aerobic exercise all my life. Regular walking 20-30 miles per week and road cycling over 100 miles per week. Had two stents fitted and currently on statins, beta blockers and blood pressure tablets. Experienced stent pain for about 3 months post stent. Recently started road cycling again and experienced tightness in chest after 30km ride similar to previous stent pain despite keeping heart rate below 120bpm. Concerned as cardiologist said I would have no difficulty in getting back to previous levels of exercise. Will seek GP advice on return of chest pain but advice from anyone with similar experience welcome.