Spirulina is widely recognized for having immune and energy boosting effects.
Many studies have documented the positive effect Spirulina has on a person’s energy level and mood. For many individuals, particularly conscious about avoiding artificial supplements, taking a natural alternative like Spirulina makes them feel energized and motivated for the day. In fact, many athletes like Tom Brady use it to increase their athletic performance. . A clinical study found that, compared to a placebo, Spirulina boosted stamina and significantly reduced fatigue. .
As communities around the world experience an increasingly aging population,  many seek foods that can assist in the maintenance of health and wellbeing into old age.  Among many natural food products, Spirulina is suggested as one of the most effective superfoods containing antioxidants.  With its abundance of antioxidants, Spirulina is capable of reducing the amount of oxidative stress the human body has to endure. Similar to how a bike loses its mobility due to rusting parts, oxidation reduces a person’s bodily functions. Its antioxidant properties are found in the rich levels of beta carotene as well as phycocyanin, the blue pigment in Spirulina. Beta carotene has been proven to “provide protection against singlet oxygen-mediated lipid peroxidation”  Phycocyanin is also responsible for providing an abundance of antioxidants. In a clinical study, Spirulina increased the plasma antioxidant capacity of hamsters by 42% .
A randomized double blind study showed that after 8 weeks Spirulina positively affected men with fatigue Int. Journal of Food Sciences and Nutrition 
Spirulina’s energy powers are fueled by the essential fatty acid gamma-linolenic acid (GLA). This Omega-6 fatty acid, found in Spirulina as well as some plant-based oils, is easily absorbed into the body and helps in releasing energy. It is also known to improve brain function, support bone health, stimulate skin and hair growth, and regulate metabolism. A randomized double blind study showed that after 8 weeks, Spirulina positively affected men with fatigue.  Its energy-boosting effects have also helped people suffering from fibromyalgia. Dependence on coffee or other caffeinated drinks can be replaced by Spirulina consumption.