GABA as an existing acid inside the human brain helps to decrease anxiety and depression, improves sleep and so on. Besides these, GABA has also some physical benefits to you. GABA contributes to muscle building, it may enhance whey protein’s muscle-building potential. So, hard-working and sportspeople can get a huge benefit from it. GABA matters to weight loss & gain. Although it depends on different hormones. GABA can also increase growth hormone.