Sign up to FREE email alerts from Mirror - The Coronavirus Briefing Subscribe Thank you for subscribing We have more newsletters Show me See our privacy notice Invalid EmailExercising with a face mask on ‘could prove fatal’, an expert has warned. Writing for The Conversation, she explained: “When we do heavy exercise, our muscles produce lactic acid, which causes that burning sensation. So it is important we gain a better understanding of the limitations of heavy exercise with a face mask.”Worryingly, two teenage boys in China recently died during compulsory physical education exams while wearing face masks. But it raises the question, is it safe to exercise with a face mask on during COVID-19?”To test the effects of wearing a face mask while exercising, Ms Bottoms ran on a treadmill at 10kph for three minutes while in full fencing kit, both with and without a face mask under the fencing mask. Without the face mask on, the concentration of oxygen around her was 19.5%.

Source: Daily Mirror June 16, 2020 07:42 UTC