My rest heart beat is between 70 and 80 but when becoming active on stairs it goes up quickly to 150-160 in 10 min. what will be the cause? i'm 32, weigh 56.

Heart rate : Based on the limited information provided, your heart rate can be perfectly normal. The heart rate normally increases with activities. The normal resting heart rate is 60-100. The heart rate can be regular or irregular and an increase in heart rate can be abnormal under several other reasons even while exercising. So to answer this question specific to you should see a doctor in person