Hi Lilia,
A standard heart rate for an adult is ~70 beats per minute, but anywhere between 50-100 beats per minute can be normal. Typically the more fit you are the lower your heart rate. Getting more physical activity will improve heart health and promote a lower heart rate. I recommend you discuss with your physician to determine if there are other steps you need to take.
All the best,
Lisa Nelson RD
Be Heart Healthy and Lose Weight