Risky,
True ....
anyway, I have discovered that there is one fat burner that you don't have to cycle ... you can use it everyday (as long as you have the money) ... and that is transdermal gel .. it does not give you the side effects as ECA ... M&F mag (June 2001) says that it has the lowest toxicity among all fat burners and did not indicate any side effects.
However, it does not give any energy boost like caffience ... no stimulating feeling ... except that it increases body heat.