Nootropics, often referred to as "smart drugs" or cognitive enhancers, are substances that can improve cognitive function, particularly executive functions, memory, creativity, or motivation. In the context of fitness biohacking, they are used to enhance mental clarity, focus, and motivation, thereby indirectly supporting physical performance and training intensity. Incorporating nootropics into a fitness routine can help overcome mental barriers to exercise, improve workout quality, and accelerate progress towards fitness goals.