Research shows that interval training, which includes short bouts (around 15 to 60 seconds) of higher intensity exercise alternated with longer, less strenuous exercise throughout your workout, is well tolerated. It’s even safe for those with heart disease and type 2 diabetes. This type of training is also very effective at increasing your cardiovascular fitness and promoting weight loss.
Most beginners find that their max fat burning is between 70 and 80 percent of their maximum heart rate. (In comparison, seasoned athletes usually have