I had the same issue when I tried to go above 4iu a dose, you begin to hold more intramuscular water. That extra water your muscles are holding ends up pressing on nerves, my hands would just go numb. Telling you for sure 90s bodybuilders used gh 2 or 3 days a week because they were very aware it caused insulin resistance. One of the reasons guys use so much gh anymore is because their taking plenty of insulin with it. So if it's making you tired you might want to check your blood sugar an hour or two after the dose. When I do the am dose it's empty stomach then I wait an hour and drink aminos with dextrose. When Milos Sarcev did 10 iu a day he split it into 5 2iu shots, he believed in trying to mimic the body's natural pulse. For losing weight have you just tried using clen in the very specific step ladder format over 14 days?
Days 1-2 80mcg
Days 3-4 100mcg
Days 5-7 120mcg
Days 8-10 140mcg
Days 11-12 120mcg
Days 13 100mcg
Day 14 80mcg
This has always worked extremely well for me and my clients, after the 14 days you take 2 weeks off. This is to downregulate your beta 2 receptors they upregulate quickly which is why you have to up the dose every 2 to 3 days. A lot of people don't realize you have to take clen specifically like this to get the most out of its fat burning effects