Carnitine is a non-essential amino acid that is synthesized in the body from Lysine. Carnitine's most well-known metabolic function is the transport of long-chain fatty acids to the mitochondria of muscle cells, (including those of the myocardium), for oxidation. Many researchers include carnitine among fat burners for rapid weight loss and "fat burning".

L-carnitine can benefit athletes in

Recovery
Improves muscle recovery after intense training
Muscle oxygenation
It can increase the supply of oxygen to your muscles
Stamina
It can increase blood flow and nitric oxide production, helping to delay discomfort and reduce fatigue
Muscle pain
It can reduce muscle pain caused after vigorous physical activity
Production of red blood cells
It manages to increase the production of red blood cells, which carry oxygen throughout your body
Carnitine is naturally formed from the essential amino acids lysine and methionine and is excreted in the liver and kidneys. Its main role is to mediate various metabolic pathways and mainly energy production in the mitochondria of cells. In addition, it has the property of being stored in the muscles, the brain, the heart and even the sperm.

L-Carnitine transports long chain fatty acids such as triglycerides into the mitochondria where they can be used for energy production & increasing your strength.