Why Do You Feel Breathless While Climbing Stairs? Do You feel breathless while climbing stairs, even when you are not doing any heavy physical activity? While mild breathlessness after exercise can be normal, frequent breathlessness during simple activities may sometimes signal an underlying medical condition. Your heart and lungs https://sites.google.com/view/heartdoctoramit/blog/why-do-you-feel-breathless-while-climbing-stairs