Mechanistic evidence suggests that alpha-GPC exerts its effects by increasing the synthesis and release of acetylcholine in the brain, where it is involved in memory, motivation, arousal, and attention.[1][2][3][4]
Acetylcholine is also responsible for the action potentials that stimulate muscles to contract. Therefore, it’s theorized that increased acetylcholine levels lead to a stronger signal for muscle contraction and, consequently, to increased force production.