Although there isn’t any connection between singing on the stairs and heart disease, a 2021 article in Revista Espanola de Cardiologia said that climbing stairs is a good indicator of heart health because it measures your exercise capacity. Typically, doctors will measure your exercise capacity using a treadmill, but the study looked at how quickly people could ascend four flights of stairs, or about 60 steps. The people who had good exercise capacity could climb the stairs in about 46 seconds, and those who had intermediate exercise capacity took almost a minute to climb 60 stairs. Those who took 82 seconds or longer had limited exercise capacity.
A press release about the study from the European Society of Cardiology said that a low or limited exercise capacity is linked to a higher mortality rate. Study author and cardiologist Dr. Jesús Peteiro said, “If it takes you more than one-and-a-half minutes to ascend four flights of stairs, your health is suboptimal, and it would be a good idea to consult a doctor.”