High Heart Rate During Exercise

[Jump623]

I am a 25 year old female, weigh 125, 5'3, low blood pressure. I consider myself to be in decent shape. I exercise 3-5 days a week, have ran a few half marathons and marathon last year. My resting HR is around 60, however my HR reaches 160-170 within running 1 mile at 5.8-6.0 mph (10:30-10 min pace). And on the second mile it reaches 175-180. If I continue to run it has reached 190-200 before. I regularly do strength training (about 2-3 times a week). I also have been trying to increase the incline at 2 min increments to see if it will help to strengthen my legs. I can't seem to figure out why I have such a high HR while exercising though. My family has no history of heart problems. Any suggestions?

[Niffer991]

What you are talking about is nothing to worry about. You are basically healthy and are able to train within your cardio HR zone which is 75-85% of your HRR, most people this could be conserning but if you are a highly trained athlete then you are well able to push your heart as your heart is a muscle just like the rest of your body. The one thing I would say is if you are trying to burn fat then SLOW DOWN as your HR should be 140-160 BPM.