There are a number of different fatcors that can increase or influence your pulse rate.
These factors include:- Exercise
- a fever,
- a big fright, or
- stress of some sort.
- the time of day
- your activity level
- your age
- an overactive thyroid gland
- anaemia
- the use of stimulants
- heart disease.
Your heart rate during exercise, as compared to you resting heart rate can be used to determine your level of fitness.