Research shows that certain preworkout supplements can have a profound effect on your training intensity or sports performance during competition. Here we investigate the very best preworkouts and those that are proven to increase strength, improve power, enhance speed or reduce fatigue. Caffeine for example has been shown to create a more favourable environment within the working muscle when taken preworkout and beta alanine has been shown to improve endurance and help you train harder for longer.
Creatine can improve both the size and strength of your muscles and provide your body with the stimulus it needs bulk up and although it can be taken any time, many athletes like taking this preworkout. L Carnitine has been shown to spare muscle glycogen and therefore help improve endurance which is why it's included in so many endurance enhancing pre-workout formulas. Lastly we also address what happens when certain preworkout supplements and ingredients are used together and we look at the synergistic benefits of them when they are combined into a preworkout formula.