If this is your first cycle, 200mg will show results. Like with anything, the body gets acclimated and you have to take more Test or mix other compounds with your cycle. The theory is that EQ increases red blood cells so it will increase endurance. I'm not sure I've seen that in my own experience. I've run Test/EQ in the past but pretty low dose EQ along with Deca for joint lubrication. EQ will also retain water. IMO, low dose of Test for recovery from hard training is just as good as Test/EQ combo. My .02