How fast is too fast for a heart rate while exercising for someone with tachycardia? assuming non-smoker and no alcohol or drugs and otherwise healthy female in late teens to early twenties. tachycardia started a week ago with no identified cause.

Many reasons 4 tach: There are many reasons for tachycardia and you should be seen by a good electro physiologist and cardiologist to work it out. Different causes have different treatments. Cannot go into all of this in 400 spaces.

Read on: Norml activity range for a 20 year old should be HR of 120-160, depending on the resting HR and degree of activity. There are many causes for tachycardia which is beyond the scope of this discussion. Someone with tachycardia should be cleared by a doctor for activity for sure.

Tachycardia: For Age 19, normal heart rate is 60 -100 beats/min. Exercise and anxiety can cause Tachycardia. Tachycardia starting a week ago at age 19 is likely due to sudden stress, such as fright with feeling of being overwhelmed or Anxiety. See Physician for possible Diagnosis of Fever, Hyperthyroidism, Anemia, B.P. Medications effect, or heart condition. See Psychiatrist for Stress Anxiety, Relaxation