Al-Marsad newspaper: Dr. Khaled Al-Nimr, a consultant and professor of cardiology and arterial catheterization, denied the validity of what was stated in a letter claiming that exercising following receiving a booster dose of the anti-Coronavirus vaccine may lead to death. The message included that any person with corona, or who received the booster dose, does not exercise until following at least 8 days because “the heart muscle is inflamed and with stress it may cause death.” For his part, Al-Nimr responded to the message, saying: “It is not true, but you can often exercise following taking the Corona vaccine, unless you temporarily suffer from side effects such as heat, suppression, muscle pain … etc., which delays its demise.”