A variety of key ingredients are widely used in a bid to increase energy levels, whether that be during training or on a daily basis. Stimulants including caffeine are popularly used, whilst other natural extracts also make an appearance, shown to also improve cognitive function and mental alertness. These ingredients are contained within a variety of supplements including Pre-Workouts, Fat Burners and Nootropics. Therefore, they can be used to suit a broad range of individuals with varying health and fitness related goals. These supplements are commonly used by those wanting to improve their performance during training, during a calorie deficit or simply to perform their daily tasks with increased efficiency.