Ever felt out of breath and tired while pushing through an intense workout? These are signs that the body is working hard to pump oxygen and nutrients to your cells to produce the energy needed for ...

A little more than 35% of people with persistent long Covid (also known as post Covid syndrome) reported that they experienced post-exertional malaise or exercise intolerance even in the second year ...

It can start with unusual discomfort or breathlessness during a workout or an uphill walk—a feeling many of us experience, and dismiss, the older we get. But medical researchers are learning more ...

Exercise intolerance, or the inability to perform physical activity at the expected or desired level, is one of the many symptoms associated with long COVID. In a study, Yale researchers help explain ...

Pembrolizumab in Relapsed and Refractory Mycosis Fungoides and Sézary Syndrome: A Multicenter Phase II Study Participants consisted of 1,041 people who had survived cancer ≥ 10 years (and had or did ...

Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. A new study provides yet more evidence that a significant subset of people who experience ...

New research found changes that could explain why some people with long COVID struggle to exercise. The study found that COVID-19 can cause changes that impact some people on a cellular level. Doctors ...

Patients with heart failure with preserved ejection fraction (HFpEF) may experience worsened exercise tolerance if they also have anemia. The exercise stress echocardiographic study included nearly ...

A new study suggests preload deficiency could be the underlying cause of fatigue and exercise intolerance in people with systemic lupus erythematosus (SLE). Preload deficiency is a condition where the ...

And experts have some theories as to why. By Melinda Wenner Moyer When Natalie Hollabaugh tested positive for Covid-19 in March 2020, her recovery felt extremely slow. Eighteen months later, she was ...