Exactly how long it takes for a calf DVT to allow normal activity depends on the patient’s recovery and usually takes about 2 to 3 weeks, with some cases requiring braking for longer. Braking rest is often required for calf DVT during the acute phase of the condition. This is usually absolute bed rest with the legs elevated appropriately to help promote circulation, if no filters are placed, but absolute bed rest is required for about 2 to 3 weeks. Subsequently, the increase in activity should be gradual and incremental, not switching to normal activity all at once. In the case of interosseous vein thrombosis, when the thrombus is relatively large, for example, more than 7 millimeters in diameter, absolute braking is often required, at least 7 weeks of bed rest, to avoid dislodgement of the thrombus due to exercise in the acute phase, which can lead to pulmonary embolism. Calf deep vein thrombosis must be timely consultation, cooperate with the doctor to take treatment, not casual activities.