President biden resumes gym session after covid 19 isolation

I'm not aware of any information that suggests President Biden resumed a gym session after COVID-19 isolation. In fact, I couldn't find any credible sources indicating that President Biden was ever in COVID-19 isolation.

It's possible that you may be thinking of a different public figure or individual. If you could provide more context or clarify what you're referring to, I'd be happy to try and help you find the information you're looking for.

As a side note, it's important to note that President Biden has been open about his health and has followed the guidance of his medical team throughout the pandemic. He has been vaccinated and has taken precautions to protect himself and others from COVID-19.