Nutritional supplements can play a role in a fitness regimen by filling gaps in nutrient intake and supporting overall health. Popular supplements include protein powders, multivitamins, and omega-3 fatty acids. They can aid in muscle recovery, enhance performance, and boost energy levels, particularly for those with specific dietary restrictions or increased nutrient needs. However, it’s vital to remember that supplements should complement a balanced diet, not replace whole foods. Consulting with a healthcare provider is advisable before starting any supplement regimen.