 found that those who took four milligrams of astaxanthin daily over 28 days scored better cycling times with greater output than those who did not take it. So they biked faster. I mean, remember this. Astaxanthin is one of the few fat-soluble antioxidants that can actually neutralize free radicals even at the site of the mitochondrial membrane. It's like cellular body armor protecting your cells, your joints, blood vessels, brain, hearts.