Sir August De Wynter is the main antagonist in the 1998 film The Avengers.
Quick Answer. Heavy legs are a common symptom of peripheral artery disease, according to SecondsCount. The heavy sensation also points to varicose veins, according to the Mayo Clinic. In those who are heavy exercisers, heavy legs are a symptom of overtraining, adds the American Council on Exercise. Continue Reading.
There are two situations where leg cramps may be a sign of a more serious underlying health condition. You should seek immediate medical help if: 1  The cramps last longer than 10 minutes and fail to improve, despite exercise.