And another strange thing I have been noticing is that supplements dont seem to have the same effect. I guess my digestion is that bad. For example, the other day I picked up some Tribulus so that I could try to boost my testosterone levels. BAD IDEA. All it has been doing is givving me headaches and making my impotence worse! I dont understand why because I took tribulus a few years back and it was awesome and I benefitted in every way.