Playing soccer used to be one of my biggest hobbies. But I haven't played in a while, and now I feel too out of shape to play soccer. Maybe if I keep doing cardio, I'll be able to start playing again soon. The reason people are telling you to give up soccer may be the increase in heart attacks in recent years. In the past year, I’ve seen several reports in the news about people having heart attacks on soccer fields in Turkey. This never used to happen before. If you feel fine, I don’t think there will be any problems.