I use Kong to keep my test levels elevated and balanced. The ebbs and tides that I've been used to at my age (50) are leveled out, and my stamina has increased tremendously. This is a great product for getting back the motivation in my life, even just in working out, going out for a run, etc. Taken at night, which is the recommended time, the combination of herbs and trace elements absorb better into the body, and I wake up feeling young again. Thanks, Kong!