On today's market there are many caffeine supplements, and almost all sports supplements are enhanced with caffeine. (fitnessandpower.com)
Research has shown that those who took caffeine supplements one hour before their workouts were capable of training with higher intensity levels and their body prioritizes fat as an energy source instead of carbs. (fitnessandpower.com)
If you don't like the taste of coffee or want to avoid added calories and sugars, there are many natural caffeine supplements available, some that even allow for the gradual release of caffeine to give you sustained energy. (purebarre.com)