Smoking affects the lungs and other organ systems, including the heart. The carbon monoxide from tobacco reduces oxygen to the heart, causing it to beat faster to deliver oxygen to the body. Share on ...

The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

A fast heartbeat can be caused by emotions like stress or anxiety. Dehydration, or drinking caffeine or other stimulants, can ...

SVT results in the heart beating at much faster rate than normal, and can be triggered by exercise, lack of sleep, dehydration, and more. When the human body is exerted during physical activities such ...

It's a common yet uncomfortable sensation when the heart beats rapidly for a second or two and then becomes normal. Whether it occurs when one is resting, after going up the stairs, or even while ...