The diagnostic test that records the electrical activity of the heart is called ECG or Electrocardiogram. An ECG is a painless and simple test, which uses electrodes arranged and attached to your skin, and records the activity of the heart. ECG detects any abnormal rhythm and pattern of the heart beat and this helps doctors in diagnosing arrhythmias.
1. Don't smoke.
2. Drink lots of water.
3. Try not to scream or yell.
4. Do a lot of vocal warm ups!
I think c would be the answer
The importance of physical activities can help you get motivated, stress relief, and even help with your immune system.
