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.
Heart rate and Pulse rate is often same thing. The pulse starts in the heart beat. Every heart beat causes a pulse in the arteries, similar to the ripple a stone makes when itâ¦ is thrown in a pond. The heart rate is the number of times your heart contracts in one minute. The heart is a muscular pump that with each heart beat pumps blood around the body by contraction of the heart's muscle.