The article goes too far when it says that a nail test can prove your circulation is “fantastic.” It can’t. In adults, capillary refill can normally take around three seconds, and older adults may take longer. A normal result also doesn’t rule out every circulation problem.
Likewise, the temperature test isn’t a reliable home test for circulation. Warm feet or hands don’t establish that blood vessels are clear, and cold extremities can have many causes besides poor circulation.
The article also incorrectly presents purple blotches as simply “harmless” broken capillaries.
