Might sound like throwing more shit into the fire. But look into gw 1550 or whatever the number is. I ran clen before twice,once I bowed out after a week because I felt so damn shitty on it, that it just wasn't worth it, second time I ran clen for 6 weeks 2 weeks on 2 off 2 on with the Ec stack on the weeks off at 75 Mgs ephedrine and 600 Mgs caffein total / day. Clen dosage didn't go above 100 mcg at peak. With gw at 20 Mgs a day I had 0 symptoms . Slept like a baby , and got ripped, too ripped I lost too much weight. I'm not saying this is safe I am well experienced and versed with ass and always do my research. This is just food for thought as I believe gw lowers resting heart rate. I had an ECT scan after that run and my heart is healthy . But I train like a beast and keep cardio strong