I'm just sharing this for new guys like myself, and anyone who doesn't usndrstand studies that much. When I first started researching about hgh I read a study about the importance of T4, and a lot of threads with and against the use of T4 with hgh, but it was all theoretical so I thought maybe It's better to start without it. I started my cycle reaching to 4 iu/5 days a week. For 3 months I noticed fat loss and muscle development, but on the 4th month I decided taking 0.75 T4 ED, and since then I've experienced a lot of improvement in the hgh effect, I'm losing much more fat. I wish I took this decision earlier.