5. Green Tea Extract: Green tea extract are also very effective natural energy booster for men that Intellux contains bioflavnoids, which are recognized for boosting energy and increasing metabolic rate of the body. Green tea has some of the very powerful antioxidants also, such as EGCG, with a wide range of health benefits. All of these are the best effective natural energy boosters for men that can be used along with regular use of Vital M-40 Capsules to boost your energy. http://www.healthcaresups.com/intellux/