Protection of joints and ligaments
The joints and ligaments are subjected to enormous loads during intense training. This is why they often need some extra help. For their protection, modern sports nutrition uses a lot of different supplements, based on collagen, chondroitin, glucosamine, curcumin (an extremely effective substance derived from turmeric), magnesium, and vitamins C, B6 and B12.
Stamina and energy
Most fat burners will increase the energy and endurance, but there are some supplements whose action is directed solely at increasing energy. For example, isotonic drinks restore the lost electrolytes in the body.
Very often, energy supplements may also include a pre-workout complex containing caffeine extract, taurine, as well as the carbohydrates (complex and simple carbs), L-carnitine, amino acids and guarana.
A multi vitamin/mineral complex can really help your body to recover from intense workouts. The most widely used are the vitamins from the B-group ans minerals such as Magnesium, Zinc etc.