resting heart rate

[goaliegirl1]

hi,
please someone help me answer this question why does resting heart rate increse with age

[mstanfordrn42]

As your heart ages, the muscles have to work harder to get the job done.  So there for, your heart rate increases.

[caregiver222]

The reason the resting heart rate increased with age is because the oxygen levels are measured by two sensors in the right and left carotid arteries.

As people age, the resistance in the vasculature increases, primarily due to fatty deposits, but also due to a diminishing ability of the vessels to expand and contract.

To cut to the chase.

The volume of blood squeezed through the blood vessels is determined in part by the internal diameter of the blood vessels.

As these decrease with age, the heart has to use a few extra beats to maintain the same oxygen levels in the carotids.

[gymdandee]

I assume you mean you are asking why your heart would race for no apparent reason, when you are at rest and not exercising. It could be a panic attack, but you would probably recognize that in other ways (a general feeling of fear). Perhaps a heart flutter from caffeine?
Everyone dreams. Most people have experienced nightmares (not in a complete REM sleep) and this occurs generally just before one is ready to wake up, but some people can wake up in them middle of the night in terror, perspiring and a racing heart not to mention trembling of the body. If you have experienced a nightmare (you could also be under stress and not in REM sleep and wake up easily) and you are dreaming about something terrible happening to you then your body reacts with racing heart. If you have habitual sleep problems see your doctor.
It can be caused by a lack of sleep or by hyperthyroidism.
Walking long distances is good for you and relieves stress as well as calms the adrenal gland down that can create rapid thoughts and too much energy to go to sleep at your usual time.
Could indicate heart problem if your heart is radcing when doing something quiet or can't walk far without being breathless for a short time. five minute walk your out of breath that indicates a problem Depending on your age (40 and over), you might consider getting a blood test. Ask your doctor about whether or not your blood lipid profile is normal.
If this has happened over a relatively long period of time, it might be due to atherosclerosis (also age dependent: men aged 45 and up and women aged 55 and up). As the blockage builds up in the arteries, the amount of blood the heart can eject with each contraction is diminished. As a result, the heart must contract more often in order to meet the same oxygen demands. However, significant blockage is often associated with angina pectoris (severe chest pain).
You also might want to be sure that you aren't taking any substances that could interact with each other. From my personal experience, taking an over the counter antihistamine (non-drowsy) contains enough ephedrine to increase heart rate. Consuming any caffeine (coffee, energy drinks, etc.) will also cause this effect.