On hard and intense workout days, I take a product mix that contains GABA, Glutamine, mucuna pruriens (% L-Dopa), Inositol, phosphatidylSerine, phosphatidylCholine, DLPA, L-Theanine, SAMe, 5-HTP, Vitamin B3, Vitamin B6. It helps me relax, get a deeper sleep and recover quicker the next morning...