There many synonyms for the term "brain training." Some of the most common ones include cognitive training, mental exercise, brain fitness, brain workout, memory practice, neuro-enhancement, brain stimulation, and cognitive enhancement. All of these terms refer to any activity or exercise that helps to improve mental agility, memory, concentration, and cognitive function in general. Some popular brain training techniques include puzzles, mindfulness meditation, memory games, and other cognitive exercises. Brain training is an important aspect of overall health and well-being as it helps to keep the brain sharp and functioning at its best.