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.
It's possible that your leg muscles are tired from carrying extra weight. Or cramps could be related to swelling from fluid buildup in your legs, a condition known as edema. (Legs often swell during pregnancy because the pressure of your expanding uterus slows the blood returning from your legs to your heart.)