The most common cause of vascular obstruction is a blood clot, also known as a DVT. This type of vascular problem usually occurs in one leg (not both), and leads to swelling of the soft tissues throughout the foot and ankle. The swelling can also extend further up the leg.
The hypothalamus is a part of your brain that controls body temperature. When you exercise, your body temperature increases, causing the hypothalamus to signal the brainstem to further increase your heart rate.
If you are taking Hormone Replacement Therapy HRT you may also be ware of an increase in episodes of heart palpitations at the beginning of your treatment. Menopause heart palpitations can increase your heart rate between 8 and 16 beats per minute.