<unk>  is the process by which cells increase<unk>  numbers. It was first described by John Holloszy in the 1960s, when it was discovered that physical endurance training induced higher<unk>  content levels, leading to greater glucose uptake by muscles.<unk>  is activated by numerous different signals during times of cellular stress or in response to environmental stimuli, such as aerobic exercise.
Mitochondrial biogenesis
Fatty acid metabolism
Pyrimidine metabolism
Lipid metabolism
Purine metabolism
Nucleotide salvage
Ethanol metabolism
Glucose uptake