Non-stimulant pre-workouts are dietary supplements designed to be consumed before exercise to enhance athletic performance, improve endurance, and increase energy levels, without the use of caffeine or other stimulants.

These pre-workouts usually contain a combination of natural and synthetic ingredients, such as nitric oxide boosters, beta-alanine, creatine, and amino acids, that are believed to improve blood flow, muscle endurance, and recovery.

The idea behind non-stimulant pre-workouts is that they can help improve performance and focus without the side effects of caffeine and other stimulants, such as jitteriness, nervousness, and sleep disturbances. They may be a good alternative for people who are sensitive to caffeine or who prefer to avoid stimulants altogether.

However, like with any dietary supplement, it's important to use non-stimulant pre-workouts as directed and to consult with a healthcare professional before use, particularly if you have any underlying medical conditions or are taking any medications.