 [ Symptoms ] my heart rate often goes as high as 170 beats per minute when i exercise i am in my mid 60s should i worry about this i monitor my blood saturation and it sometimes drops into the low 90s i have been doing this same kind of workout squash for 18 years [ Disease ] see your doctor for a referral to a cardiologist so that your heart and oxygen saturation can be carefully monitored while running on a treadmill this is called a stress test while it would not be unusual for someone is heart rate to go up this high it would be comforting to know that your heart is capable of handling the load the fact that you have been active for 18 years is wonderful so i am sure you will pass with flying colors but when you are in your mid 60 is it would be good to get the official okay