activities suddenly require much more effort than they used to.
A person may notice that:
* Walking feels exhausting
* Shopping becomes unusually difficult
* The legs feel weak
* They need frequent rest breaks
* Everyday tasks feel disproportionately tiring
When the heart cannot pump enough blood to meet the body’s needs, muscles and other tissues may receive less oxygen-rich blood, contributing to fatigue.
## 5. Persistent Coughing or Wheezing
A cough is usually associated with respiratory illness, allergies, or irritation.
But heart failure can also cause persistent coughing or wheezing because fluid may accumulate