Experience The Power Of Plant Protein! If you're someone who doesn't want to use animal-based protein or is lactose intolerant, but still wants a high quality source of protein, soy,rice or other plant protein is something you'll definitely want to consider. Whether using it for training, sports, or general health, plant protein is a great alternative for anyone looking to supplement their fitness goal. In addition to the usual benefits of a good protein, vegan proteins contain saponins, phytosterols and isoflavones. These various components have been demonstrated to have a range of positive health effects, from lowering cholesterol levels to improving the immune system.