insulin is best used when bulking it keeps the muscles full, also be careful with the amount of simple carbs consumed after injection you will get fat as f**k, start at 2iu's immediately after workout .. unless u live within 5min from the gym bring it with you in an ice pack, you will feel tired after taking it, expect stomach to get bloat. check out boston lyod insulin video on youtube he explains administration of it. last tip UNLESS YOU ARE COMPETING dont do it dude YOU CAN DIE.