Dear MightyMoose,
First, which kind of Ara-Test are you using?
There are 3 types of Ara-Test.
Ara-Test 2500: Testosterone Enanthate 200mg/ml and Testosterone Propionate 50mg/ml in a 10ml bottle.
Ara-Test 500: Testosterone Propionate 50mg/ml in a 10ml bottle.
Ara-Test 250: Testosterone Propionate 25mg/ml in a 10ml bottle.
Second, Ara-Test is a mexican product, which I believe usually is not clean. (I don't trust mexican stuff, only EQ 50/50)
Now, as far as getting tired: the problem is probably "poor" diet.
What does your diet look like at the present?
Your stats?