Physical training increases the body's need for certain nutrients — for energy production, muscle building and recovery. Creatine, amino acids and electrolytes are among the most well-studied substances in sports nutrition, with a documented role in performance capacity and recovery time. This category suits both strength training and endurance training.








No, it's not necessary. A steady daily dose gives the same saturated level over time as a loading phase, just a few days slower.
It depends on the purpose, but intake around the training session (before or after) is generally studied for the best effect on recovery and muscle building.
No, they can be relevant for any training involving heavy sweating, especially in heat, whether it's strength or endurance training.