Running in a weighted vest is an advanced move, notes Miliano. If you've just started (or generally work out) running, he suggests waiting for you to walk in a weighted waistcoat. "If your body is not used to the strenuous activity, you will probably do more harm than good if you wear a weighted vest." (See also: Frequently Asked Weight Questions from beginners, answered).
Or, if you already have knee, lumbar or ankle injuries, weight vests, according to Tony Carvajal, are a Certified CrossFit Trainer with RSP Nutrition. "Increasing the weight of your body gives your feet, ankles and knees more power," says Carvajal. "If you are injured or feel your ankles or knees are weak, avoid using a vest." That said, if you're looking for a fun way to boost core, lower body and cardiovascular strength, a weighted running vest can be a good tool. Carvajal recommends slowly integrating the accessories into your routine so that your body can adapt to and recognize the new stimulus. "Start by adding it to a simple run that's about a quarter of the distance you normally do."
A Brief Note on Sizing: Whatever you buy for a vest, you want it to be snug Not to fumble with every step. (But not so tight that you feel you can not breathe.) The good news is that all the vests on the bottom are adjustable, so the weighted running vest you choose can be adjusted to your body.
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