It also promotes a sense of clarity that remains throughout the day, accompanied by a sense of positive assuredness. Tongkat Ali increases testosterone but is not a testosterone agonist. Anabolic steroids are testosterone agonists. They cause a negative feedback reaction of the pituitary and hypothalamus (the two glands secrete a series of hormones that signal Leydig and other testosterone synthesizing cells to stop testosterone production). The result of steroid use is a definite shrinkage of the male genitals, especially the testes. The exact modus operandi of how Tongkat Ali increases blood testosterone levels without causing a negative feedback loop is still not scientifically clear. But it is widely believed that Tongkat Ali is neither a testosterone agonist nor antagonist. Tongkat Ali stimulates testosterone production by interfering with the testosterone negative feedback loop. Even when Tongkat Ali raises testosterone levels, the upstream pituitary and hypothalamus do not respond by signaling that testosterone synthesis should be down. Tongkat Ali has the reputation of letting a man have the same quality of x they enjoyed in younger years. Many men report that actually is better than it was in their younger years. They report that TomKat enhances both passion and performance. The main effect of TomKat is that otherwise healthy men feel very sexually alive, focused and driven when they are consuming this herb. Its effect on the head seems to be as strong as its effect on the genitals. Men feel younger on Tongkat Ali.