Everyone knows the 'best' way to find your heart-rate is to simply put your fingers on your carotid artery and count the heartbeats for 10 seconds and then multiply by 6 to get that total number for you beats per minute. What you didn't know is that instead of subtracting your age from the max 220 beats per minute us this new system called the 180 Formula. It seems that there are many ways to determine your training zones from a wide variety of methods however I’m going to explain two of the most popular ways of determining your optimal training zones and give an example for each. The aerobic training zone that I like to train in is around 70% - 80%. This would be my high-Zone 2 according to the zones. In training I would even train at a little higher heart rate just to give myself some extra training throughout my typical high intensity interval training workouts. Karvonen Formula - 'The 180 Formula' Another widely accepted method to determine [...]