Peak athletic performance depends on efficient mitochondrial function, the cellular powerhouses that convert nutrients into ATP (adenosine triphosphate), the energy currency your muscles use during every contraction. NAD+ (nicotinamide adenine dinucleotide) is the essential coenzyme driving this process, yet levels decline approximately 50% between ages 40 and 60, directly reducing your cells' ability to produce energy.
Intense exercise generates massive amounts of reactive oxygen species (ROS), commonly known as free radicals. While moderate ROS levels actually stimulate adaptation, excessive oxidative stress overwhelms the body's antioxidant defenses, particularly glutathione, leading to prolonged inflammation, delayed muscle repair, and accumulated cellular damage that compounds with each training session.
This oxidative burden depletes glutathione reserves faster than the body can replenish them through diet alone. When intracellular glutathione drops below optimal levels, the body enters a cycle of impaired recovery, increased susceptibility to injury, and progressive performance deterioration that conventional nutrition and rest cannot fully reverse.
