I started taking clen on saturday. I am doing 20mcg every 4 hours for a total of 60mcg a day. I have researched that it can cause insomnia and muscle cramps. I have noticed severe body aches the last few days. This is abnormal, as I never get sore when I am on a cycle. Also, it is occurring in body parts that I haven't worked out. I would describe it as the achy feeling you get when you have the flu. I was wondering if anyone else has experienced this while on clen? I am currently taking 750mg/wk test c, 600 mg/wk equipoise, and .25mg/day arimidex.