India, Sept. 2 -- Heart diseases remain the leading causes of death worldwide, yet its early signs are often subtle and easy to ignore. While people usually associate heart trouble with chest pain or breathlessness, the body often gives quieter warnings that go unnoticed.

One such signal could actually be found in your legs. Dr. Sermed Mezher, a family medicine physician and content creator, explained in a video posted on the social media platform TikTok that a quick five-second test could help identify early signs of heart failure and guide you on when it's time to consult a doctor. (Also read: Cardiologist shares 8 dangerous cholesterol myths that could be harming your heart health: 'Risk starts early.' )

Dr. Mezher advised his follow...