Using Active Fuel XT is simple. You should take the recommended dose of one capsule twice per day. You must then practice your exercises to ensure complete benefit from the product. Heavy exercises with low repetitions are ideal. Once you stick to your regimen, you will start seeing results in about 3 weeks. Though the regular bottle costs $89.95, new customers can order a 30 day supply absolutely free. This will give you an opportunity to try out the product before choosing to regularly purchase it.