Caffeine nasal spray is a fast-acting way to get caffeine into your body without having to consume high levels of caffeine in other forms. It provides an instant boost of energy and can help you focus on the task. DMAa is a powerful ingredient that can be found in many pre-workout supplements. It has been gaining more popularity due to its ability to improve focus and energy levels, as well as its potential stimulant effects. Pre-workouts with DMAa are designed to give athletes and bodybuilders an extra boost of energy when they need it most.