BOOSTS ENERGY AND
Good for those with low testosterone levels or those who generally feel sapped of energy, D-aspartic acid, an amino acid, has become a popular supplement for muscle-gaining. When testosterone levels are low, D-aspartic acid helps to improve mood, focus, and sexual energy. It works by encouraging Leydig cells, which influence your testicles to increase both testosterone and sperm production. While your pituitary gland also produces D-aspartic acid, you may get even greater benefits by supplementing this amino acid.
BODY FAT AND RAISES
As mentioned above, these two
benefits are interconnected—having higher levels of testosterone helps your body use stored fat for fuel. In fact, Coleus forskohlii,a herb used in ayurvedic medicine, has been incorporated into many
fat-burning supplements. Forskolin boosts testosterone by activating adenylate cyclase, an enzyme that increases cAMP (a compound related to ATP and important for intracellular signalling). In addition, forskolin boosts the activity of Leydig cells, which help produce testosterone in thepresence of luteinising hormone. Research has shown that supplementing forskolin not only increases
testosterone but also burns body fat compared to placebo.