My resting heart rate is somewhere between 120-135 BPM..... People tell me it is ridiculously high yet provide no other information. Is there any dangers, or anything to worry about it being so fast? Is there things I should avoid or changes I should make in my lifestyle? I walk about 2 miles a day. I am a (just about) 15 year old male, 6 foot tall and I weigh 115 lbs.