I have been taking tribulus for a month and a half now, and I feel it is working(libido, stengh increases) One question though, I have been experiencing distinct fatigue/tiredness all the time. Even though I'm getting 8-10 hours of sleep per night, I still feel tired throughout the whole day. My diet is on key, along with cardio 4 nights a week, and I just can't find the source of it. The only thing I can think of is the tribulus becasue I am not currently taking anything else. Anyone else experience this?? Thanks bros