Why Do My Legs Feel Heavy and Tired?

Many people accept heavy, tired legs as a normal part of long workdays, travel, or aging. In reality, persistent heaviness — especially when it worsens through the day or eases when you elevate your legs — is one of the most common early signs of venous insufficiency.

What's happening inside the veins

Healthy leg veins rely on one-way valves to push blood upward, against gravity, back toward the heart. When those valves weaken or fail, blood can pool in the lower legs. That pooling creates pressure, inflammation, and the sensation of weighted, fatigued legs.

Common signs to watch for

Heaviness paired with swelling around the ankle, visible varicose or spider veins, nighttime cramping, restless legs, or itching over a vein are all signs worth evaluating. Symptoms that recur — particularly in the same leg — should not be ignored.

When to consider a vein evaluation

If heaviness affects your daily activity, your sleep, or your comfort by the end of the day, a venous ultrasound can quickly determine whether vein disease is contributing. Minimally invasive treatment options are typically performed in-office, with little downtime.