What problems can it cause? With a high resting heart rate
The high resting heart rate of a person is the rate at which his or her heart beats when he or she is at rest. A person's resting rate can be very high if he or she is under stress, is anxious, is suffering from a bout of fever, is a heavy smoker (which is also called a chain-smoker), is an alcoholic, has an excessive consumption of caffeine, suffers from respiratory illnesses or any other types of illnesses, suffers from hyperthyroidism, is anaemic and uses certain decongestants and medications which are used to treat coughs.
A person can lower his or her resting heart rate if he or she stays away from the external factors which increase his or her levels of stress, is able to overcome his anxiety, recovers from a bout of fever, abstains from smoking, abstains from alcohol, abstains from caffeine, recovers from respiratory illnesses or any other types of illnesses, gets treated for hyperthyroidism, consults a physician if he or she is suffering from anaemia and stops using uses certain decongestants and medications which are used to treat coughs.
A person can lower his or her resting heart rate if he or she stays away from the external factors which increase his or her levels of stress, is able to overcome his anxiety, recovers from a bout of fever, abstains from smoking, abstains from alcohol, abstains from caffeine, recovers from respiratory illnesses or any other types of illnesses, gets treated for hyperthyroidism, consults a physician if he or she is suffering from anaemia and stops using uses certain decongestants and medications which are used to treat coughs.
A heart rate of over 100 at rest is high.
I would say anything above 70