A growing number of studies are raising concerns about the coronavirus’ long-term effects on the heart. Athletes especially need to heed the warnings.

That’s why Rajpal suggests paying extra-close attention to your body if you’re going out for a hard run, bike ride, or other sporting activity, especially if you have any inkling of sickness. “If you experience any suspicious symptoms—chest pain, shortness of breath, or heart palpitations—contact your doctor,” he says. And if you have tested positive for Covid-19, he says, you should take a few weeks off before returning gradually to the level of training you were at before...

A growing number of studies are raising concerns about the coronavirus’ long-term effects on the heart. Athletes especially need to heed the warnings.

That’s why Rajpal suggests paying extra-close attention to your body if you’re going out for a hard run, bike ride, or other sporting activity, especially if you have any inkling of sickness. “If you experience any suspicious symptoms—chest pain, shortness of breath, or heart palpitations—contact your doctor,” he says. And if you have tested positive for Covid-19, he says, you should take a few weeks off before returning gradually to the level of training you were at before...