Title What is baseballâs âmodern eraâ? The start of the 20th century might not seem particularly modernâafter all, there were only 45 states in the Union, hardly anyone owned a car (the Model T didnât debut until 1908) and William McKinley, a Civil War vet, occupied the White House.
Causes. Exercise is a common cause of rapid heart rate. Your heart rate should elevate during exercise, but it may be a problem if your heart rate remains elevated for more than 10 minutes after you finish your workout. Dehydration can also cause a faster heart rate.xercise is a common cause of rapid heart rate. Your heart rate should elevate during exercise, but it may be a problem if your heart rate remains elevated for more than 10 minutes after you finish your workout.
Save. The heart is a vital organ that pumps oxygenated blood throughout the body, which is essential to keep the body's cells functioning properly. According to the Mayo Clinic, a normal heartbeat rate is 60 to 100 beats per minute, but there are several factors that can cause the heart to beat faster.ave. The heart is a vital organ that pumps oxygenated blood throughout the body, which is essential to keep the body's cells functioning properly. According to the Mayo Clinic, a normal heartbeat rate is 60 to 100 beats per minute, but there are several factors that can cause the heart to beat faster.